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A251052 Number of (n+1)X(5+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the absolute difference of its antidiagonal elements 1
5449, 25847, 53306, 123396, 248803, 521785, 1045337, 2159272, 4456235, 9472092, 20420073, 44991377, 100353084, 226542343, 514848340, 1176370457, 2695715545, 6190362467, 14231110836, 32740615341, 75353257829, 173470613490 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A251055

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>12

EXAMPLE

Some solutions for n=4

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

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

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

..2..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....2..0..2..0..0..0

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

CROSSREFS

Sequence in context: A125016 A234157 A204474 * A259514 A217255 A247715

Adjacent sequences:  A251049 A251050 A251051 * A251053 A251054 A251055

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 29 2014

STATUS

approved

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Last modified April 1 12:43 EDT 2020. Contains 333159 sequences. (Running on oeis4.)