The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A238586

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A238586

Number T(n,k) of equivalence classes of ways of placing k 2 X 2 tiles in an n X 10 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=2, 0<=k<=5*floor(n/2), read by rows.
(history; published version)

#23 by Alois P. Heinz at Mon May 29 21:10:50 EDT 2017

STATUS

proposed

approved

#22 by Andrew Howroyd at Mon May 29 20:27:42 EDT 2017

STATUS

editing

proposed

#21 by Andrew Howroyd at Mon May 29 18:36:27 EDT 2017

DATA

1, 5, 16, 19, 9, 1, 1, 5, 32, 73, 66, 10, 1, 10, 85, 377, 961, 1348, 1080, 472, 111, 12, 1, 1, 10, 142, 1011, 4429, 11370, 17252, 14478, 6094, 1020, 70, 1, 15, 236, 2280, 14203, 56571, 146212, 244063, 261847, 179063, 77974, 21422, 3637, 368, 24, 1

LINKS

Andrew Howroyd, <a href="/A238586/b238586.txt">Table of n, a(n) for n = 2..937</a>

KEYWORD

tabf,nonn,more

EXTENSIONS

Terms a(36) and beyond from Andrew Howroyd, May 29 2017

STATUS

approved

editing

#20 by N. J. A. Sloane at Tue May 05 19:35:00 EDT 2015

STATUS

proposed

approved

#19 by Jon E. Schoenfield at Sun May 03 20:40:31 EDT 2015

STATUS

editing

proposed

#18 by Jon E. Schoenfield at Sun May 03 20:40:29 EDT 2015

EXTENSIONS

Terms corrected and xrefs crossrefs updated by Christopher Hunt Gribble, Apr 27 2015

STATUS

proposed

editing

#17 by Christopher Hunt Gribble at Fri May 01 17:52:06 EDT 2015

STATUS

editing

proposed

#16 by Christopher Hunt Gribble at Fri May 01 17:51:33 EDT 2015

LINKS

Christopher Hunt Gribble, <a href="/A238009/a238009_1.cpp.txt">C++ program</a> (please fix, also for other sequences)

#15 by Joerg Arndt at Wed Apr 29 12:11:44 EDT 2015

LINKS

Christopher Hunt Gribble, <a href="/A238009/a238009_1.cpp.txt">C++ program</a> (please fix, also for other sequences)

STATUS

reviewed

editing

Discussion

Wed Apr 29

17:50

Christopher Hunt Gribble: The program compiles with g++ (gcc 4.5.2) as stated in the header, operating under Windows 7.  If the program is required to compile with different compilers on different operating systems then they need to be agreed and specified for all to see.

Thu Apr 30

09:49

Joerg Arndt: A standard for the C++ language exists 8^)

#14 by Joerg Arndt at Wed Apr 29 07:52:05 EDT 2015

STATUS

proposed

reviewed

Discussion

Wed Apr 29

07:54

Joerg Arndt: Program does not compile:  "__int64 does not name a type",
"NumMatchIdentity was not declared in this scope", and other errors and warnings.