A279462 Number of nX4 0..1 arrays with no element equal 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.

2, 20, 180, 1722, 15484, 129914, 1079792, 8845592, 71540206, 572555634, 4544198480, 35814522446, 280584310722, 2186897305592, 16968580781888, 131145107324352, 1010053181919720, 7755079215544062, 59376833021426668

Offset

1,1

Comments

Column 4 of A279466.

Links

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

Example

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

Crossrefs

Cf. A279466.

Sequence in context: A367939 A105493 A067641 * A037566 A125857 A226312

Adjacent sequences: A279459 A279460 A279461 * A279463 A279464 A279465

Keyword

nonn

Author

R. H. Hardin, Dec 12 2016

Status

approved