login
The OEIS is supported by the many generous donors to the OEIS Foundation.
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A251076
Number of tilings of a 21 X n rectangle using 3n heptominoes of shape I.
3
1, 1, 1, 1, 1, 1, 1, 53, 141, 271, 449, 681, 973, 1331, 9391, 26803, 60953, 122641, 226921, 394031, 650413, 2039288, 5611209, 13694084, 30417897, 62763334, 122046063, 225958222, 532867801, 1319078776, 3196149101, 7383041514, 16186545853, 33788903208
(list; graph; refs; listen; history; text; internal format)
OFFSET
0,8
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..500
Wikipedia, Heptomino
CROSSREFS
Column k=7 of A251072.
Cf. A250664.
Sequence in context: A239721 A142259 A161611 * A142043 A175600 A142417
Adjacent sequences: A251073 A251074 A251075 * A251077 A251078 A251079
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Nov 29 2014
STATUS
approved

Lookup Welcome Wiki Register Music Plot 2 Demos Index WebCam Contribute Format Style Sheet Transforms Superseeker Recents
The OEIS Community
Maintained by The OEIS Foundation Inc.
Last modified October 1 00:03 EDT 2024. Contains 376365 sequences.
License Agreements, Terms of Use, Privacy Policy