A305529 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.

64, 5912, 141474, 4205030, 120736482, 3433486971, 98651246976, 2831187189412, 81130991759635, 2327459782753405, 66758390881360962, 1914593230122723438, 54914942315814292919, 1575060774726221953701, 45175138991736203003237

Offset

1,1

Comments

Column 7 of A305530.

Links

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

Example

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

Crossrefs

Cf. A305530.

Sequence in context: A316182 A305768 A317117 * A317003 A316821 A317571

Adjacent sequences: A305526 A305527 A305528 * A305530 A305531 A305532

Keyword

nonn

Author

R. H. Hardin, Jun 04 2018

Status

approved