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A256951 Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically 1
154680, 844499, 2663867, 6304044, 11818550, 18296498, 26587024, 37470100, 53161612, 69050742, 91680642, 119433538, 159000950, 201303722, 261166670, 335773334, 446131442, 569452246, 754791850, 989860526, 1351069110, 1770887594 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A256954

LINKS

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

FORMULA

Empirical: a(n) = 2*a(n-1) -2*a(n-3) +7*a(n-4) -11*a(n-5) -2*a(n-6) +12*a(n-7) -12*a(n-8) +9*a(n-9) +12*a(n-10) -16*a(n-11) -4*a(n-12) +14*a(n-13) -16*a(n-14) +16*a(n-16) -8*a(n-17) for n>35

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Cf. A256954

Sequence in context: A341212 A255040 A255033 * A101767 A235220 A282163

Adjacent sequences:  A256948 A256949 A256950 * A256952 A256953 A256954

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 13 2015

STATUS

approved

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Last modified July 3 06:46 EDT 2022. Contains 355031 sequences. (Running on oeis4.)