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A235522 Number of (2+1)X(n+1) 0..3 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise 1
2272, 61080, 1693053, 33809449, 677462696, 10650729023, 168095526255, 2189567171013, 28620629593255, 319485434417677, 3577241071949034, 35060741376690094, 344559923623341999, 3019877362280307030 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 2 of A235521
LINKS
EXAMPLE
Some solutions for n=2
..1..0..0....1..2..1....3..3..1....3..1..0....1..1..1....0..1..3....0..3..1
..3..0..1....2..1..2....3..3..1....0..3..2....3..2..1....3..0..0....3..0..1
..3..1..1....0..3..0....3..3..2....2..3..0....2..2..0....2..3..1....3..1..1
CROSSREFS
Sequence in context: A236606 A251493 A235519 * A235650 A059466 A260206
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 11 2014
STATUS
approved

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Last modified February 25 19:26 EST 2024. Contains 370332 sequences. (Running on oeis4.)