A235738 Number of (n+1)X(2+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise

576, 9710, 160075, 2423417, 36199157, 523547651, 7519969703, 106697433668, 1509299904955, 21253277135453, 298927623301734, 4197620035630914, 58919872257393788, 826569038954130084, 11594164564872458891

Offset

1,1

Comments

Column 2 of A235742

Links

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

R. H. Hardin, Empirical recurrence of order 78

Formula

Empirical recurrence of order 78 (see link above)

Example

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

Crossrefs

Sequence in context: A036514 A269034 A188787 * A236078 A264524 A209781

Adjacent sequences: A235735 A235736 A235737 * A235739 A235740 A235741

Keyword

nonn

Author

R. H. Hardin, Jan 15 2014

Status

approved