A224351 Number of nX6 0..2 arrays with diagonals and antidiagonals unimodal and rows nondecreasing

28, 784, 13052, 151010, 1421762, 12340932, 107694133, 977742699, 9202126546, 88363107023, 855357421083, 8298639299407, 80568348690372, 782845364074773, 7615402149223961, 74171368176011107, 723133239021563347

Offset

1,1

Comments

Column 6 of A224353

Links

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

R. H. Hardin, Empirical recurrence of order 98

Formula

Empirical recurrence of order 98 (see link above)

Example

Some solutions for n=3
..1..1..1..1..2..2....0..0..0..0..0..0....1..1..1..1..1..2....0..1..1..1..2..2
..1..1..1..1..1..1....0..0..0..1..1..1....0..1..1..2..2..2....1..1..2..2..2..2
..0..0..1..1..1..1....0..1..1..1..2..2....0..0..0..2..2..2....0..0..0..0..0..1

Crossrefs

Sequence in context: A264368 A224266 A223923 * A224193 A224010 A171302

Adjacent sequences: A224348 A224349 A224350 * A224352 A224353 A224354

Keyword

nonn

Author

R. H. Hardin Apr 04 2013

Status

approved