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A235519 Number of (n+1)X(2+1) 0..3 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise 1
2272, 61080, 1649707, 32516127, 636820654, 9861273365, 152479393753, 1957874677935, 25165909286162, 277510995116690, 3067337562969422, 29771961183712488, 289825441528124171, 2521587145850085310 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A235521

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..177

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A125253 A236606 A251493 * A235522 A235650 A059466

Adjacent sequences:  A235516 A235517 A235518 * A235520 A235521 A235522

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 11 2014

STATUS

approved

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Last modified November 12 19:19 EST 2018. Contains 317116 sequences. (Running on oeis4.)