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A262817
Number of (n+3)X(3+3) 0..1 arrays with each row divisible by 9 and column not divisible by 9, read as a binary number with top and left being the most significant bits.
1
2744, 21952, 175616, 1442897, 11697083, 94196375, 753571000, 6028568000, 48228544000, 385987369041, 3088535151547, 24710826271383, 197686610171064, 1581492881368512, 12651943050948096, 101216195966457937
OFFSET
1,1
COMMENTS
Column 3 of A262819.
LINKS
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=3
..0..1..0..0..1..0....0..1..1..0..1..1....0..1..0..0..1..0....0..1..0..0..1..0
..1..0..0..1..0..0....0..1..1..0..1..1....1..1..1..1..1..1....0..1..1..0..1..1
..1..1..1..1..1..1....1..1..0..1..1..0....1..1..1..1..1..1....1..1..1..1..1..1
..0..0..0..0..0..0....1..0..1..1..0..1....1..0..0..1..0..0....0..0..1..0..0..1
..1..1..0..1..1..0....1..1..0..1..1..0....0..0..1..0..0..1....1..1..1..1..1..1
..0..1..0..0..1..0....1..1..1..1..1..1....0..0..0..0..0..0....0..0..1..0..0..1
CROSSREFS
Cf. A262819.
Sequence in context: A094497 A202460 A262820 * A250821 A250498 A180695
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 03 2015
STATUS
approved