The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A297739

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Number of 7 X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1's.
(history; published version)

#6 by Wesley Ivan Hurt at Sun Jun 26 13:04:44 EDT 2022

STATUS

editing

approved

#5 by Wesley Ivan Hurt at Sun Jun 26 13:04:28 EDT 2022

NAME

Number of 7Xn 7 X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1s1's.

STATUS

approved

editing

#4 by R. H. Hardin at Thu Jan 04 22:22:41 EST 2018

STATUS

editing

approved

#3 by R. H. Hardin at Thu Jan 04 22:22:38 EST 2018

LINKS

R. H. Hardin, <a href="/A297739/b297739.txt">Table of n, a(n) for n = 1..210</a>

#2 by R. H. Hardin at Thu Jan 04 22:22:23 EST 2018

NAME

allocated for R. H. Hardin

Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1s.

DATA

1, 13, 1026, 4676, 53173, 414651, 6241242, 56834907, 675663465, 6893539424, 81152925020, 872784930365, 9965405854651, 109677107185776, 1242862523673395, 13837791169587782, 156042319458946688, 1745891736485935186

OFFSET

1,2

COMMENTS

Row 7 of A297733.

EXAMPLE

Some solutions for n=5

..0..0..1..0..0. .0..1..1..1..1. .0..0..0..0..0. .0..0..0..0..0

..0..1..1..1..1. .0..1..1..1..1. .1..1..1..1..1. .0..1..1..1..0

..1..1..1..1..0. .0..0..0..0..0. .0..1..0..1..0. .0..1..1..1..0

..0..0..1..0..0. .0..1..1..1..1. .0..1..0..0..0. .0..0..0..0..0

..1..1..0..1..1. .1..1..0..1..0. .1..1..1..0..0. .1..1..1..0..0

..0..1..0..1..0. .1..0..1..1..1. .1..0..1..0..0. .0..1..0..0..0

..0..0..1..0..0. .0..1..0..0..0. .0..1..0..0..0. .1..1..1..0..0

CROSSREFS

Cf. A297733.

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Jan 04 2018

STATUS

approved

editing

#1 by R. H. Hardin at Thu Jan 04 22:12:01 EST 2018

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved