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A251026 Number of (n+1)X(6+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements 1
49481, 144737, 272547, 563271, 1078862, 2160510, 4230166, 8587303, 17595371, 37245814, 80267686, 176914157, 395061425, 892649426, 2030400282, 4641838603, 10641445579, 24442851146, 56201464318, 129311654629, 297631797905 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A251028

LINKS

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

FORMULA

Empirical: a(n) = 8*a(n-1) -25*a(n-2) +35*a(n-3) -7*a(n-4) -49*a(n-5) +77*a(n-6) -55*a(n-7) +20*a(n-8) -3*a(n-9) for n>14

EXAMPLE

Some solutions for n=2

..0..0..0..0..2..0..0....2..2..2..3..3..3..3....0..1..1..1..1..2..2

..0..0..0..0..2..0..0....0..0..0..0..0..0..0....1..0..0..0..0..1..0

..2..2..1..0..2..0..0....3..3..3..3..2..1..0....3..1..0..0..0..1..0

CROSSREFS

Sequence in context: A251912 A251910 A235172 * A210351 A234563 A251881

Adjacent sequences:  A251023 A251024 A251025 * A251027 A251028 A251029

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 29 2014

STATUS

approved

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Last modified June 26 03:30 EDT 2022. Contains 354871 sequences. (Running on oeis4.)