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A251097 Number of (n+1)X(5+1) 0..1 arrays with no 2X2 subblock having its minimum diagonal element less than its minimum antidiagonal element 1
1278, 30517, 713769, 16697127, 391088995, 9160138107, 214512524583, 5023196973684, 117627015646158, 2754453306431041, 64500662200661322, 1510403356276243957, 35368910899695159552, 828228987011430501703 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A251100

LINKS

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

FORMULA

Empirical: a(n) = 64*a(n-1) -1764*a(n-2) +29700*a(n-3) -350488*a(n-4) +3107079*a(n-5) -21536824*a(n-6) +119757642*a(n-7) -543940823*a(n-8) +2045999565*a(n-9) -6444601609*a(n-10) +17157130467*a(n-11) -38908214534*a(n-12) +75659291228*a(n-13) -126869529554*a(n-14) +184336056227*a(n-15) -233006780681*a(n-16) +257060876816*a(n-17) -248098761256*a(n-18) +209731219435*a(n-19) -155260530399*a(n-20) +100445433948*a(n-21) -56541615273*a(n-22) +27492563839*a(n-23) -11423056137*a(n-24) +3995023081*a(n-25) -1152174020*a(n-26) +266437832*a(n-27) -47464016*a(n-28) +6119568*a(n-29) -509760*a(n-30) +20736*a(n-31)

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A190831 A202643 A237407 * A031798 A293923 A251890

Adjacent sequences:  A251094 A251095 A251096 * A251098 A251099 A251100

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 29 2014

STATUS

approved

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Last modified August 10 16:24 EDT 2022. Contains 356039 sequences. (Running on oeis4.)