A302880 Number of 5Xn 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

16, 21, 82, 285, 1197, 7580, 41498, 224087, 1300510, 7961144, 47528608, 279333761, 1677401880, 10223444297, 61648514855, 368974094762, 2225242688063, 13491965168663, 81443512904106, 490081514479072, 2957619899837635

Offset

1,1

Comments

Row 5 of A302877.

Links

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

Example

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

Crossrefs

Cf. A302877.

Sequence in context: A302313 A303200 A303043 * A303528 A123662 A065778

Adjacent sequences: A302877 A302878 A302879 * A302881 A302882 A302883

Keyword

nonn

Author

R. H. Hardin, Apr 15 2018

Status

approved