A233604 Number of (2+2)X(n+2) 0..2 arrays with no increasing sequence of length 3 horizontally, vertically or antidiagonally downwards

342185, 20463326, 1228836823, 73856970690, 4437742405449, 266642245870341, 16020595216911881, 962558718514483306, 57832813368256439630, 3474731841444380222451, 208770030278144266959124

Offset

1,1

Comments

Row 2 of A233602

Links

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

R. H. Hardin, Empirical recurrence of order 61

Formula

Empirical recurrence of order 61 (see link above)

Example

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

Crossrefs

Sequence in context: A233596 A291420 A266171 * A363175 A306796 A365611

Adjacent sequences: A233601 A233602 A233603 * A233605 A233606 A233607

Keyword

nonn

Author

R. H. Hardin, Dec 14 2013

Status

approved