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.

20164, 1649707, 136233789, 8689553076, 540301382239, 27599864726623, 1397293005907502, 59856359610041424, 2572018450181284021, 95068944388986767362, 3557129012542953968448, 115748659950180727952294

Offset

1,1

Comments

Row 3 of A235521.

Links

R. H. Hardin, Table of n, a(n) for n = 1..14

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

Adjacent sequences: A235520 A235521 A235522 * A235524 A235525 A235526

Keyword

nonn

Author

R. H. Hardin, Jan 11 2014

Status

approved