A280160 Number of nX7 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

15, 208, 2901, 30874, 318220, 3138340, 30089398, 285461736, 2671391625, 24767920958, 227975959120, 2085061428192, 18968539604655, 171769706597400, 1549174969429286, 13922125649869206, 124717748809003344

Offset

1,1

Comments

Column 7 of A280161.

Links

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

Example

Some solutions for n=4
..0..0..0..0..0..0..0. .0..1..0..0..0..0..1. .0..0..1..0..0..0..0
..0..0..0..0..1..0..0. .0..0..0..0..0..1..1. .0..1..1..0..0..0..1
..0..0..1..1..0..0..1. .0..0..0..0..1..1..0. .1..1..1..0..1..1..1
..0..1..1..1..0..1..1. .0..0..0..1..1..0..0. .1..1..1..1..1..1..1

Crossrefs

Cf. A280161.

Sequence in context: A089138 A271333 A051813 * A239991 A274563 A122572

Adjacent sequences: A280157 A280158 A280159 * A280161 A280162 A280163

Keyword

nonn

Author

R. H. Hardin, Dec 27 2016

Status

approved