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 A253932 Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal sum nondecreasing horizontally and vertically 1
 91296, 299727, 992616, 3152822, 3515548, 6348659, 9470400, 11628396, 17673400, 27050795, 39953480, 60949836, 92326066, 139144143, 209469426, 313061550, 464262972, 684266432, 1000888422, 1452696403, 2091096410, 2987297421 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 5 of A253935 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical quasipolynomial FORMULA Empirical: a(n) = 10*a(n-1) -47*a(n-2) +140*a(n-3) -298*a(n-4) +472*a(n-5) -532*a(n-6) +304*a(n-7) +320*a(n-8) -1264*a(n-9) +2226*a(n-10) -2756*a(n-11) +2441*a(n-12) -1110*a(n-13) -1041*a(n-14) +3456*a(n-15) -5366*a(n-16) +6044*a(n-17) -5090*a(n-18) +2616*a(n-19) +768*a(n-20) -4152*a(n-21) +6620*a(n-22) -7520*a(n-23) +6620*a(n-24) -4152*a(n-25) +768*a(n-26) +2616*a(n-27) -5090*a(n-28) +6044*a(n-29) -5366*a(n-30) +3456*a(n-31) -1041*a(n-32) -1110*a(n-33) +2441*a(n-34) -2756*a(n-35) +2226*a(n-36) -1264*a(n-37) +320*a(n-38) +304*a(n-39) -532*a(n-40) +472*a(n-41) -298*a(n-42) +140*a(n-43) -47*a(n-44) +10*a(n-45) -a(n-46) for n>71 Empirical polynomial of degree 15 plus a quasipolynomial of degree 5 with period 24 for n>25 (see link above) EXAMPLE Some solutions for n=1 ..0..0..0..0..1..1..1....1..0..0..0..1..1..0....0..1..0..0..0..1..1 ..0..1..1..1..1..1..1....0..0..0..0..0..0..1....1..0..0..1..1..1..0 ..0..0..1..1..1..1..1....0..1..0..0..0..0..0....0..1..1..1..0..0..1 CROSSREFS Sequence in context: A255985 A253838 A253845 * A205940 A204881 A330159 Adjacent sequences: A253929 A253930 A253931 * A253933 A253934 A253935 KEYWORD nonn AUTHOR R. H. Hardin, Jan 19 2015 STATUS approved

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Last modified August 14 15:40 EDT 2024. Contains 375165 sequences. (Running on oeis4.)