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A235419 Number of (n+1)X(3+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise 1
2304, 60879, 1607343, 33411901, 692896087, 11682620720, 200551110843, 2871917717259, 42041935330149, 525298071602797, 6697226820277449, 74334917602209111, 839152459304377096, 8384862572475130200 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A235421

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..151

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A218431 A187292 A235423 * A229698 A236280 A187194

Adjacent sequences:  A235416 A235417 A235418 * A235420 A235421 A235422

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 10 2014

STATUS

approved

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Last modified December 2 22:44 EST 2021. Contains 349445 sequences. (Running on oeis4.)