A302419 Number of 6Xn 0..1 arrays with every element equal to 0, 1, 2 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

32, 857, 1431, 3548, 16123, 84581, 306064, 1137414, 4669030, 19117072, 75529085, 300884302, 1210571319, 4856093280, 19423290085, 77795634366, 311818814702, 1249258281500, 5004132992012, 20048293318277, 80323158073845

Offset

1,1

Comments

Row 6 of A302415.

Links

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

R. H. Hardin, Empirical recurrence of order 79

Formula

Empirical recurrence of order 79 (see link above)

Example

Some solutions for n=5
..0..0..1..1..0. .0..1..0..1..1. .0..1..1..0..0. .0..1..1..0..0
..1..0..1..0..0. .0..0..1..1..0. .0..0..1..1..1. .0..0..1..0..0
..1..0..1..0..1. .0..1..0..1..0. .1..0..1..0..1. .1..0..1..1..1
..1..0..1..0..0. .0..1..0..0..0. .1..0..1..0..1. .1..0..1..1..1
..0..0..1..1..1. .0..0..0..1..1. .1..0..1..0..1. .1..0..1..0..0
..0..1..1..0..1. .1..1..0..1..0. .1..0..1..0..1. .0..0..1..1..0

Crossrefs

Cf. A302415.

Sequence in context: A302067 A281474 A302627 * A303186 A302327 A303020

Adjacent sequences: A302416 A302417 A302418 * A302420 A302421 A302422

Keyword

nonn

Author

R. H. Hardin, Apr 07 2018

Status

approved