A303523 Number of nX6 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

13, 113, 286, 1875, 13031, 102779, 965150, 9961980, 109395622, 1249312308, 14535068668, 170908188530, 2021484478581, 23981853993648, 284987683948763, 3389805878799915, 40340446531700113, 480206820275333547

Offset

1,1

Comments

Column 6 of A303525.

Links

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

Example

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

Crossrefs

Cf. A303525.

Sequence in context: A141937 A320464 A302875 * A244763 A320463 A182022

Adjacent sequences: A303520 A303521 A303522 * A303524 A303525 A303526

Keyword

nonn

Author

R. H. Hardin, Apr 25 2018

Status

approved