A295274 - OEIS

A295274

Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 4 1s.

81, 2570, 99245, 3697742, 139221499, 5221177246, 196091375073, 7361533108317, 276386201580189, 10376697508977992, 389585088134351369, 14626667590533685932, 549146940474831592906, 20617295057949494189434

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 7 of A295275.

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Cf. A295275.

Sequence in context: A236147 A237473 A282995 * A206534 A231859 A210128

Adjacent sequences: A295271 A295272 A295273 * A295275 A295276 A295277

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 19 2017

STATUS

approved