A229365 Number of n X n 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 antidiagonally

3, 38, 1610, 222990, 104382552, 162794962814, 851668326534130, 14897378230939391994, 872764112558460116016396, 171094770747292212524499798502, 112292092887713869652391305250607824

Offset

1,1

Comments

Diagonal of A229372

Links

R. H. Hardin, Table of n, a(n) for n = 1..13

Example

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

Crossrefs

Sequence in context: A062155 A278927 A099022 * A136638 A213002 A213003

Adjacent sequences: A229362 A229363 A229364 * A229366 A229367 A229368

Keyword

nonn

Author

R. H. Hardin Sep 21 2013

Status

approved