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A297505 Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 2 neighboring 1s. 1
37, 2097, 34757, 1247716, 35049871, 978288822, 28914051279, 823340493402, 23748019543354, 684563956136832, 19685697905900807, 567106229569054219, 16326031115140984900, 470031756510991757935, 13533758185630160222532 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A297506.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Cf. A297506.

Sequence in context: A088872 A025762 A297313 * A099807 A193123 A295846

Adjacent sequences:  A297502 A297503 A297504 * A297506 A297507 A297508

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 31 2017

STATUS

approved

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Last modified May 18 10:28 EDT 2022. Contains 353807 sequences. (Running on oeis4.)