A295529 - OEIS

A295529

Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 2 or 4 1s.

21, 876, 21489, 588529, 16031147, 437241277, 11938414614, 325438086413, 8875686431050, 242075272701612, 6602021695088725, 180056949233250710, 4910676438495880068, 133928360921171032911, 3652617573522712382545

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

OFFSET

1,1

COMMENTS

Column 6 of A295531.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A295531.

Sequence in context: A296384 A296641 A295038 * A296737 A202810 A204196

Adjacent sequences: A295526 A295527 A295528 * A295530 A295531 A295532

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 23 2017

STATUS

approved