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A204797 Number of (n+1)X6 0..1 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing 1
907, 18550, 270148, 4122638, 60519533, 897624021, 13302221086, 197792658833, 2942082840954, 43794460372476, 652007505839888, 9708650955706316, 144572537862960056, 2152929873533491740, 32061226264300296272 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A204800
LINKS
FORMULA
Empirical: a(n) = 44*a(n-1) -709*a(n-2) +4178*a(n-3) +14975*a(n-4) -337072*a(n-5) +1417073*a(n-6) +2903810*a(n-7) -42888206*a(n-8) +94465992*a(n-9) +306179836*a(n-10) -1722598072*a(n-11) +808737736*a(n-12) +10623736128*a(n-13) -19949811840*a(n-14) -24870817280*a(n-15) +102186867072*a(n-16) -13317484032*a(n-17) -250274585600*a(n-18) +183648323584*a(n-19) +325400336384*a(n-20) -382504878080*a(n-21) -222713896960*a(n-22) +377006850048*a(n-23) +75123064832*a(n-24) -192002129920*a(n-25) -13202620416*a(n-26) +46758100992*a(n-27) +2264924160*a(n-28) -3623878656*a(n-29) for n>40
EXAMPLE
Some solutions for n=4
..0..1..1..0..0..1....1..0..0..0..0..1....1..0..0..0..1..0....1..1..0..0..1..0
..0..1..1..0..0..0....1..0..1..0..0..1....0..0..1..0..1..0....0..0..0..0..1..0
..0..0..0..0..0..0....1..0..1..0..0..0....0..0..1..0..1..0....0..1..0..0..1..0
..0..1..0..1..0..1....1..0..0..0..1..1....0..0..1..0..1..1....0..1..0..0..1..1
..0..0..0..0..0..1....0..0..1..0..1..1....1..0..0..0..0..1....0..0..0..0..0..1
CROSSREFS
Sequence in context: A253347 A253354 A204613 * A303887 A305280 A304893
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 19 2012
STATUS
approved

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Last modified June 2 17:31 EDT 2023. Contains 363100 sequences. (Running on oeis4.)