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

19456, 281024, 3912576, 51322752, 656964096, 8552031360, 111699091200, 1451408273792, 18855945794560, 244993609733760, 3183443990624512, 41382824034966400, 538020003594157568, 6993611458624561280

Offset

1,1

Comments

Row 3 of A254491

Links

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

R. H. Hardin, Empirical recurrence of order 70

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

Adjacent sequences: A254490 A254491 A254492 * A254494 A254495 A254496

Keyword

nonn

Author

R. H. Hardin, Jan 31 2015

Status

approved