A300604 Number of nX7 0..1 arrays with every element equal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

1, 74, 230, 1397, 11752, 110249, 1056816, 9684995, 92435041, 880584819, 8391672510, 79962511095, 763064081276, 7281278638212, 69463421784079, 662816884120372, 6324400190195839, 60344941962776127, 575795288992490918

Offset

1,2

Comments

Column 7 of A300605.

Links

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

Example

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

Crossrefs

Cf. A300605.

Sequence in context: A204370 A204363 A051970 * A301329 A121809 A204361

Adjacent sequences: A300601 A300602 A300603 * A300605 A300606 A300607

Keyword

nonn

Author

R. H. Hardin, Mar 09 2018

Status

approved