A229373 - OEIS

A229373

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

3, 30, 956, 78690, 20014278, 13999334726, 29757371834046, 174511010613631514, 3123774881474924676470, 153541601581149110702908096, 23150533101205838897343355257558, 9547382122506738591063952302014235288

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OFFSET

1,1

COMMENTS

Diagonal of A229380.

LINKS

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

EXAMPLE

Some solutions for n=4

..1..0..1..0....2..0..0..2....2..0..2..1....1..2..2..1....1..2..1..2

..1..0..1..0....1..2..2..1....1..0..1..2....2..0..1..0....0..0..0..0

..2..0..1..2....1..0..1..2....1..0..1..0....1..0..2..0....2..1..2..1

..1..2..2..1....1..2..1..0....2..0..1..2....1..0..1..2....0..0..0..2

CROSSREFS

Cf. A229380.

Sequence in context: A174549 A363426 A184575 * A355400 A203469 A296590

Adjacent sequences: A229370 A229371 A229372 * A229374 A229375 A229376

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 21 2013

STATUS

approved