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A236156 Number of (n+1)X(n+1) 0..2 arrays colored with the sets of distinct values in every 2X2 subblock, with new values 0..2 introduced row-major order 0
14, 417, 24428, 3024540, 808607717, 468609819108, 589088812727878, 1602664681345638592 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A236164

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A222904 A239785 A275025 * A258392 A269504 A033815

Adjacent sequences:  A236153 A236154 A236155 * A236157 A236158 A236159

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 19 2014

STATUS

approved

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Last modified June 14 21:27 EDT 2021. Contains 345041 sequences. (Running on oeis4.)