

A254425


Number of (4+1)X(n+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and netosw antidiagonally


1



9623, 238639, 6683795, 199339608, 5865501284, 176249310185, 5303248513516, 160601900255520, 4871790218122520, 148101566721144218, 4506468752512913580, 137234365855057507402, 4181007197115662729640, 127420614137971238715046
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OFFSET

1,1


COMMENTS



LINKS



FORMULA

Empirical recurrence of order 59 (see link above)


EXAMPLE

Some solutions for n=1
..0..2....1..1....1..2....1..2....0..2....0..2....0..0....1..2....2..2....1..0
..1..1....2..2....2..2....0..0....1..1....0..1....2..2....2..1....2..2....1..1
..2..2....1..2....0..0....1..1....2..1....0..0....2..2....2..1....2..2....1..1
..2..0....2..2....0..0....2..2....2..1....2..1....2..2....0..0....2..2....2..2
..1..1....1..0....1..2....1..0....2..2....0..1....1..0....1..2....1..0....1..2


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



