A204942 - OEIS

A204942

Number of (n+2)X4 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly one way, and new values 0..2 introduced in row major order

16032, 328910, 6907192, 135480703, 2795434368, 58695095028, 1207470043135, 25041308069922, 522156611063241, 10836026931458739, 225099736606852873, 4683065466351804274, 97330031208382877298, 2022937940387433629191

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 2 of A204945

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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