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A317740 Number of nX7 0..1 arrays with every element unequal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
0, 22, 6, 35, 74, 36, 274, 280, 1065, 1939, 5947, 13101, 35847, 83062, 222994, 537669, 1395855, 3480819, 8943072, 22421261, 57460156, 144954058, 369414113, 936279738, 2382817938, 6046949393, 15383924113, 39073108671, 99355550907, 252459496924 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A317741.

LINKS

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

R. H. Hardin, Empirical recurrence of order 97

FORMULA

Empirical recurrence of order 97 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A317741.

Sequence in context: A304456 A040469 A040468 * A317901 A040467 A194708

Adjacent sequences:  A317737 A317738 A317739 * A317741 A317742 A317743

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 05 2018

STATUS

approved

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Last modified May 18 23:31 EDT 2022. Contains 353826 sequences. (Running on oeis4.)