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A235523 Number of (3+1) X (n+1) 0..3 arrays with 2 X 2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise. 1
20164, 1649707, 136233789, 8689553076, 540301382239, 27599864726623, 1397293005907502, 59856359610041424, 2572018450181284021, 95068944388986767362, 3557129012542953968448, 115748659950180727952294 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 3 of A235521.
LINKS
EXAMPLE
Some solutions for n=1
..1..2....1..0....0..1....1..0....3..3....1..0....3..3....2..1....1..2....1..3
..0..1....2..0....2..3....2..0....2..2....3..1....3..1....0..0....2..1....2..2
..3..1....3..1....1..1....0..1....3..3....0..3....3..3....2..2....0..3....1..3
..2..2....2..0....2..3....3..2....2..3....3..3....3..1....2..2....1..3....1..3
CROSSREFS
Cf. A235521.
Sequence in context: A262776 A119648 A127224 * A235520 A235651 A114613
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 11 2014
STATUS
approved

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Last modified March 4 09:05 EST 2024. Contains 370528 sequences. (Running on oeis4.)