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A236279 Number of (n+1)X(2+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and columnwise 1
432, 5805, 87450, 901317, 9293996, 73777097, 583531732, 3814287681, 24858329516, 139836395921, 784874890619, 3914363002363, 19489759979307, 88019540187885, 397033923060013, 1649563318118096, 6847455887807999, 26493023678026609 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A236282

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A235422 A234405 A234400 * A223595 A223436 A230922

Adjacent sequences:  A236276 A236277 A236278 * A236280 A236281 A236282

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 21 2014

STATUS

approved

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Last modified February 28 01:43 EST 2020. Contains 332319 sequences. (Running on oeis4.)