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 A232415 Number of (1+1)X(n+1) 0..2 arrays with every element both >= and <= some horizontal, diagonal or antidiagonal neighbor 1
 15, 159, 973, 6477, 46713, 334521, 2375879, 16872055, 119936863, 852644471, 6060859773, 43081768317, 306237423553, 2176828198993, 15473532443783, 109990357259447, 781843471181927, 5557571249357231, 39504835607986701 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 1 of A232414 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 6*a(n-1) +2*a(n-2) +32*a(n-3) +69*a(n-4) +2*a(n-5) +24*a(n-6) -56*a(n-7) -160*a(n-8) +32*a(n-9) +64*a(n-10) EXAMPLE Some solutions for n=6 ..0..2..0..1..0..2..2....0..0..1..1..0..2..0....0..2..0..0..0..2..2 ..1..0..2..0..2..0..2....1..1..1..1..2..0..0....2..0..1..1..0..1..2 CROSSREFS Sequence in context: A367497 A232414 A183555 * A016297 A206811 A027544 Adjacent sequences: A232412 A232413 A232414 * A232416 A232417 A232418 KEYWORD nonn AUTHOR R. H. Hardin, Nov 23 2013 STATUS approved

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Last modified December 2 16:07 EST 2023. Contains 367524 sequences. (Running on oeis4.)