A235652 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and columnwise

256, 2272, 2272, 20164, 75176, 20164, 131208, 2723053, 2723053, 131208, 853776, 63898897, 444495768, 63898897, 853776, 4548852, 1494414258, 43576923092, 43576923092, 1494414258, 4548852, 24235929, 26134209539, 4228043972530

Offset

1,1

Comments

Table starts

.....256........2272...........20164..............131208...............853776

....2272.......75176.........2723053............63898897...........1494414258

...20164.....2723053.......444495768.........43576923092........4228043972530

..131208....63898897.....43576923092......17753163039244.....7139791037097420

..853776..1494414258...4228043972530....7139791037097420.11877890687003939863

.4548852.26134209539.294719604196153.2038446270198046968

Links

R. H. Hardin, Table of n, a(n) for n = 1..49

Example

Some solutions for n=2 k=4
..0..0..0..0..3....0..0..3..0..3....0..0..3..0..1....0..0..0..0..0
..3..0..3..0..2....0..0..1..0..2....0..0..1..0..3....1..0..2..0..3
..3..1..3..2..1....3..1..2..1..0....2..0..3..2..1....0..1..1..1..0

Crossrefs

Column 1 is A235518

Sequence in context: A236118 A236113 A235521 * A235518 A206109 A206102

Adjacent sequences: A235649 A235650 A235651 * A235653 A235654 A235655

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 13 2014

Status

approved