login
A254493
Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally
1
19456, 281024, 3912576, 51322752, 656964096, 8552031360, 111699091200, 1451408273792, 18855945794560, 244993609733760, 3183443990624512, 41382824034966400, 538020003594157568, 6993611458624561280
OFFSET
1,1
COMMENTS
Row 3 of A254491
FORMULA
Empirical recurrence of order 70 (see link above)
EXAMPLE
Some solutions for n=1
..0..1..1....1..0..0....1..1..1....1..1..0....0..0..1....1..0..0....1..1..1
..1..1..0....0..0..0....1..0..0....1..0..0....1..1..1....0..1..1....1..0..0
..0..1..0....0..1..0....1..1..0....0..1..0....0..0..0....1..0..1....0..1..0
..1..1..1....0..1..0....1..1..0....1..0..0....0..0..1....1..0..1....0..1..1
..1..1..1....1..0..0....1..0..0....1..0..1....0..0..1....1..1..1....1..1..1
CROSSREFS
Sequence in context: A204592 A140930 A254486 * A253858 A336982 A345574
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 31 2015
STATUS
approved