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 A258525 Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and central column plus the two minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
 14184, 92996, 523716, 1455282, 3806582, 11711440, 35610562, 114007482, 361659778, 1120640520, 3663319530, 11761984674, 37533685074, 120519971192, 385359250346, 1242349766402, 4027691968226, 12950233669160, 41756033526570 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A258530 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 2*a(n-1) +11*a(n-2) -8*a(n-3) -27*a(n-4) +14*a(n-5) -83*a(n-6) -1344*a(n-7) +68*a(n-8) +8440*a(n-9) +5152*a(n-10) -15424*a(n-11) -28416*a(n-12) +17280*a(n-13) +47104*a(n-14) -32768*a(n-15) for n>23 EXAMPLE Some solutions for n=2 ..0..0..0..0..1....0..1..0..1..1....0..1..1..1..0....1..0..1..0..0 ..0..1..1..1..1....0..0..1..0..1....0..0..0..1..1....0..0..0..0..0 ..1..1..0..0..1....0..0..1..0..0....0..1..1..1..1....0..0..0..1..1 ..0..1..0..1..0....0..1..0..1..0....0..1..1..0..1....0..1..0..0..1 CROSSREFS Cf. A258530 Sequence in context: A251068 A184559 A258532 * A254917 A270800 A271247 Adjacent sequences: A258522 A258523 A258524 * A258526 A258527 A258528 KEYWORD nonn AUTHOR R. H. Hardin, Jun 02 2015 STATUS approved

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Last modified June 6 20:05 EDT 2023. Contains 363151 sequences. (Running on oeis4.)