A205467 - OEIS

A205467

Number of (n+1) X (n+1) 0..2 arrays with every 2 X 2 subblock having the same number of equal edges, and new values 0..2 introduced in row major order.

14, 263, 14639, 2368164, 1002405121, 1094476686239, 3037575583505983, 21477571401148556382, 385928233193168681488351

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OFFSET

1,1

COMMENTS

Diagonal of A205475.

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Cf. A205475.

Sequence in context: A304446 A304189 A115611 * A216986 A138560 A051690

Adjacent sequences: A205464 A205465 A205466 * A205468 A205469 A205470

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 27 2012

STATUS

approved