A236907 Number of (n+1)X(4+1) 0..3 arrays with the maximum plus the upper median plus the minimum of every 2X2 subblock equal.

19888, 326868, 5345722, 109900910, 2199548878, 48719331954, 1055219565906, 24050871268974, 539501655013126, 12433820388637890, 283498027769610628, 6560232682549786038, 150748784305547024916, 3492824451949115295124

Offset

1,1

Comments

Column 4 of A236911

Links

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

Example

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

Crossrefs

Sequence in context: A250703 A256653 A186957 * A263298 A237564 A171353

Adjacent sequences: A236904 A236905 A236906 * A236908 A236909 A236910

Keyword

nonn

Author

R. H. Hardin, Feb 01 2014

Status

approved