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A235520 Number of (n+1)X(3+1) 0..3 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise 1
20164, 1693053, 136233789, 8849747316, 569055271070, 29822537207178, 1571264979362306, 68874735366332203, 3041344407262868925, 114330480823095423147, 4332358632370420614992, 142558641746950286696618 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A235521

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..22

EXAMPLE

Some solutions for n=1

..1..0..0..0....0..2..2..0....2..3..0..2....2..0..0..1....1..3..1..1

..1..2..1..2....3..3..2..0....2..0..0..2....0..3..0..2....2..2..2..0

CROSSREFS

Sequence in context: A119648 A127224 A235523 * A235651 A114613 A209878

Adjacent sequences:  A235517 A235518 A235519 * A235521 A235522 A235523

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 11 2014

STATUS

approved

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Last modified November 19 02:32 EST 2018. Contains 317332 sequences. (Running on oeis4.)