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A253347 Number of (n+1)X(5+1) 0..1 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
907, 13810, 200740, 3006936, 44555528, 664592224, 9887498224, 147292687568, 2193102920288, 32661849908016, 486389502506976, 7243465635640272, 107870373848471680, 1606428416440365872, 23923215185921918560 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A253350

LINKS

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

FORMULA

Empirical: a(n) = 36*a(n-1) -406*a(n-2) +404*a(n-3) +23747*a(n-4) -145816*a(n-5) -129968*a(n-6) +3736568*a(n-7) -7902612*a(n-8) -29701104*a(n-9) +128249776*a(n-10) +34934976*a(n-11) -780114560*a(n-12) +607369728*a(n-13) +2210927104*a(n-14) -3052507136*a(n-15) -2863537152*a(n-16) +5709414400*a(n-17) +1514283008*a(n-18) -4781309952*a(n-19) -281149440*a(n-20) +1658847232*a(n-21) +94371840*a(n-22) -150994944*a(n-23) for n>25

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A134075 A316679 A177998 * A253354 A204613 A204797

Adjacent sequences: A253344 A253345 A253346 * A253348 A253349 A253350

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 30 2014

STATUS

approved

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Last modified February 6 20:15 EST 2023. Contains 360111 sequences. (Running on oeis4.)