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A305251 Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 4 or 8 king-move adjacent elements, with upper left element zero. 1
21, 127, 121, 356, 1010, 2985, 9288, 29714, 94491, 302488, 974340, 3152830, 10230396, 33285406, 108488648, 354109540, 1157319070, 3786080477, 12395839066, 40611746091, 133123022408, 436560165995, 1432171781602, 4699809062692 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A305252.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305252.

Sequence in context: A002299 A303807 A304854 * A316551 A304543 A306128

Adjacent sequences:  A305248 A305249 A305250 * A305252 A305253 A305254

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 28 2018

STATUS

approved

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Last modified June 14 21:27 EDT 2021. Contains 345041 sequences. (Running on oeis4.)