A235813 Number of (n+1) X (2+1) 0..3 arrays with the sum of each 2 X 2 subblock two median terms lexicographically nondecreasing rowwise and columnwise.

2648, 84300, 2904651, 78133908, 2024258650, 45232185179, 960244682353, 18629377159706, 344562315553883, 6003667066393097, 100443885749557587, 1610133435482186036, 24960770149456460632, 374598638074715718092

Offset

1,1

Comments

Column 2 of A235815.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Cf. A235815.

Sequence in context: A235676 A235446 A235750 * A225023 A251162 A217440

Adjacent sequences: A235810 A235811 A235812 * A235814 A235815 A235816

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved