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 A284078 Number of 4Xn 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements. 1
 0, 0, 314, 7302, 147864, 2696970, 45973823, 754541156, 11967618472, 185031284250, 2806789996272, 41897592713742, 617056516191321, 8986059093265166, 129599934394187822, 1853438708093687988, 26311359259223459474 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Row 4 of A284075. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 84 FORMULA Empirical recurrence of order 84 (see link above) EXAMPLE Some solutions for n=4 ..0..1..1..0. .1..0..0..0. .1..1..0..0. .0..1..1..1. .0..0..0..1 ..1..1..1..1. .0..0..0..0. .0..1..1..1. .1..0..1..0. .1..1..0..1 ..1..0..1..0. .1..1..1..0. .1..1..0..1. .0..1..1..1. .1..1..1..0 ..0..1..1..1. .1..1..1..0. .1..0..1..1. .1..0..1..1. .0..0..1..1 CROSSREFS Cf. A284075. Sequence in context: A157621 A230945 A183691 * A231021 A104819 A283901 Adjacent sequences: A284075 A284076 A284077 * A284079 A284080 A284081 KEYWORD nonn AUTHOR R. H. Hardin, Mar 19 2017 STATUS approved

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Last modified May 20 14:08 EDT 2024. Contains 372717 sequences. (Running on oeis4.)