A254582 Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and the central column and the two maximums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally

72939, 545360, 5909527, 58920922, 548753241, 5184793937, 49094787979, 464109388554, 4388623973352, 41497627764959, 392355045769673, 3709832984584812, 35077649385100542, 331666144126635733

Offset

1,1

Comments

Column 4 of A254586

Links

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

Formula

Empirical: a(n) = 7*a(n-1) +26*a(n-2) +22*a(n-3) -92*a(n-4) -3346*a(n-5) -3353*a(n-6) +15621*a(n-7) +56452*a(n-8) +115856*a(n-9) -415048*a(n-10) -1140576*a(n-11) +1731632*a(n-12) +3696912*a(n-13) -4777936*a(n-14) -5098384*a(n-15) +9168832*a(n-16) +297280*a(n-17) -9782784*a(n-18) +5598208*a(n-19) +3727360*a(n-20) -3596288*a(n-21) +819200*a(n-22) -147456*a(n-23) -524288*a(n-24) +262144*a(n-25) for n>32

Example

Some solutions for n=1
..1..0..1..1..1..0....1..0..0..1..1..1....1..1..0..1..0..0....0..1..0..1..0..1
..1..1..0..1..1..1....0..0..0..1..0..1....1..0..1..1..1..0....0..0..0..0..1..0
..0..0..1..0..0..0....0..0..1..0..1..1....0..1..0..0..1..1....0..0..1..1..1..1

Crossrefs

Sequence in context: A252333 A161730 A071145 * A254589 A254357 A031665

Adjacent sequences: A254579 A254580 A254581 * A254583 A254584 A254585

Keyword

nonn

Author

R. H. Hardin, Feb 01 2015

Status

approved