A235651 Number of (n+1) X (3+1) 0..3 arrays with 2 X 2 subblock sum of squares lexicographically nondecreasing rowwise and columnwise.

20164, 2723053, 444495768, 43576923092, 4228043972530, 294719604196153, 20402007541421466, 1111136113863736174, 60260903730760132349, 2706696881330482536901, 121212900258048259395753

Offset

1,1

Comments

Column 3 of A235652.

Links

R. H. Hardin, Table of n, a(n) for n = 1..24

Example

Some solutions for n=1
..2..0..3..1....3..1..3..3....1..0..1..3....3..0..3..0....3..2..3..1
..3..2..2..2....3..0..3..0....0..1..2..2....2..0..3..2....1..2..3..3

Crossrefs

Cf. A235652.

Sequence in context: A127224 A235523 A235520 * A114613 A209878 A031682

Adjacent sequences: A235648 A235649 A235650 * A235652 A235653 A235654

Keyword

nonn

Author

R. H. Hardin, Jan 13 2014

Status

approved