A253980 Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal maximum nondecreasing horizontally and vertically

21304, 417518, 8727838, 179261149, 3672381306, 75620185999, 1556452499274, 32027982651882, 659238041669648, 13568633472966170, 279271703727266760, 5748131163323313403, 118311298400157452800, 2435148116665821992581

Offset

1,1

Comments

Column 3 of A253985

Links

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

R. H. Hardin, Empirical recurrence of order 68

Formula

Empirical recurrence of order 68 (see link above)

Example

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

Crossrefs

Sequence in context: A177857 A254385 A254392 * A349508 A250532 A234454

Adjacent sequences: A253977 A253978 A253979 * A253981 A253982 A253983

Keyword

nonn

Author

R. H. Hardin, Jan 21 2015

Status

approved