A284221 Number of n X 7 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

33, 1746, 163708, 17538010, 1970768869, 227677212684, 26772321109067, 3187484402643589, 383012404461341362, 46352294274050867321, 5641487492728040767503, 689803988820235909398592

Offset

1,1

Comments

Column 7 of A284222.

Links

R. H. Hardin, Table of n, a(n) for n = 1..97

Example

Some solutions for n=3
..0..1..0..1..1..0..1. .0..1..0..1..1..1..0. .0..1..1..1..0..1..0
..0..0..1..1..1..1..0. .1..0..0..0..0..1..1. .0..0..1..0..1..1..0
..0..0..0..1..0..0..1. .0..1..1..0..1..1..1. .1..1..1..0..0..0..0

Crossrefs

Cf. A284222.

Sequence in context: A284198 A284164 A330478 * A264170 A180920 A120288

Adjacent sequences: A284218 A284219 A284220 * A284222 A284223 A284224

Keyword

nonn

Author

R. H. Hardin, Mar 23 2017

Status

approved