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 A183641 Number of (n+1)X9 0..3 arrays with every 2x2 subblock summing to 6 0
 302536, 386404, 563416, 945364, 1793416, 3743524, 8411896, 20077684, 50494696 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 8 of A183642 LINKS Table of n, a(n) for n=1..9. FORMULA Empirical: a(n)=10*a(n-1)-35*a(n-2)+50*a(n-3)-24*a(n-4) EXAMPLE Some solutions for 3X9 ..2..0..2..2..0..0..3..0..2....0..2..3..0..3..0..2..2..3 ..1..3..1..1..3..3..0..3..1....3..1..0..3..0..3..1..1..0 ..2..0..2..2..0..0..3..0..2....0..2..3..0..3..0..2..2..3 CROSSREFS Sequence in context: A156998 A156999 A111031 * A212230 A185852 A053849 Adjacent sequences: A183638 A183639 A183640 * A183642 A183643 A183644 KEYWORD nonn AUTHOR R. H. Hardin Jan 06 2011 STATUS approved

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Last modified May 29 12:15 EDT 2023. Contains 363042 sequences. (Running on oeis4.)