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A250955 Number of (n+1)X(7+1) 0..1 arrays with no 2X2 subblock having its maximum diagonal element less than its minimum antidiagonal element 1
40545, 6588344, 1068793208, 173396103624, 28130774228952, 4563772381621072, 740399698245965774, 120118108984608820672, 19487258188664690627928, 3161498585197751785301512, 512903006004112848693757874 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A250956

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 217*a(n-1) -9657*a(n-2) +124578*a(n-3) +170544*a(n-4) -10015311*a(n-5) +58649394*a(n-6) -123233697*a(n-7) -48475236*a(n-8) +586861054*a(n-9) -648215662*a(n-10) -98069529*a(n-11) +412774803*a(n-12) -157024008*a(n-13) -1439235*a(n-14) +9306900*a(n-15) -1445850*a(n-16)

EXAMPLE

Some solutions for n=1

..1..1..0..1..1..0..0..1....0..0..0..1..1..1..1..1....1..0..0..1..1..0..0..0

..0..0..1..1..1..0..1..1....0..0..0..0..1..1..0..1....1..1..0..0..0..0..1..0

CROSSREFS

Sequence in context: A237970 A218399 A090060 * A334004 A097238 A249879

Adjacent sequences:  A250952 A250953 A250954 * A250956 A250957 A250958

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 28 2014

STATUS

approved

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Last modified May 26 04:43 EDT 2022. Contains 354074 sequences. (Running on oeis4.)