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 A262335 Number of (n+3)X(3+3) 0..1 arrays with each row and column divisible by 9, read as a binary number with top and left being the most significant bits. 1
 8, 64, 512, 3375, 24389, 185193, 1481544, 11852352, 94818816, 756058031, 6038510661, 48268303721, 386146429768, 3089171438144, 24713371505152, 197696790931375, 1581533604060229, 12652105941015913, 101216847528127304 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A262338. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 12*a(n-1) -32*a(n-2) -64*a(n-3) +768*a(n-4) -2048*a(n-5) +65*a(n-6) -780*a(n-7) +2080*a(n-8) +4160*a(n-9) -49920*a(n-10) +133120*a(n-11) -64*a(n-12) +768*a(n-13) -2048*a(n-14) -4096*a(n-15) +49152*a(n-16) -131072*a(n-17) EXAMPLE Some solutions for n=4 ..0..1..1..0..1..1....1..0..1..1..0..1....0..0..1..0..0..1....1..0..0..1..0..0 ..0..1..0..0..1..0....1..1..1..1..1..1....0..0..0..0..0..0....0..1..1..0..1..1 ..0..0..0..0..0..0....1..1..0..1..1..0....0..1..0..0..1..0....1..0..0..1..0..0 ..1..0..1..1..0..1....1..1..1..1..1..1....0..0..1..0..0..1....0..1..1..0..1..1 ..0..0..0..0..0..0....1..1..1..1..1..1....0..0..0..0..0..0....0..1..1..0..1..1 ..0..1..0..0..1..0....1..1..0..1..1..0....0..1..0..0..1..0....0..0..0..0..0..0 ..1..1..0..1..1..0....0..1..0..0..1..0....0..0..0..0..0..0....1..1..1..1..1..1 CROSSREFS Cf. A262338. Sequence in context: A267730 A189155 A189337 * A221664 A228981 A222388 Adjacent sequences: A262332 A262333 A262334 * A262336 A262337 A262338 KEYWORD nonn AUTHOR R. H. Hardin, Sep 18 2015 STATUS approved

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Last modified March 26 06:47 EDT 2023. Contains 361529 sequences. (Running on oeis4.)