A184093 Number of (n+1)X8 0..3 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one

24754, 87119, 4969133, 305194632, 25951449861

Offset

1,1

Comments

Column 7 of A184095

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for 3X8
..1..1..1..1..1..2..2..3....1..1..2..2..2..3..3..3....1..1..1..1..1..1..2..2
..1..1..1..2..2..1..1..0....1..3..1..1..2..0..0..1....1..1..1..2..2..2..2..2
..1..1..2..1..2..1..2..3....2..1..1..3..1..3..3..2....1..1..2..0..1..1..1..2
...
...4..4..5..6..6..6..6.......6..7..6..7..7..6..7.......4..4..5..6..6..7..8...
...4..5..6..7..6..5..6.......7..6..6..7..6..6..6.......4..5..5..5..6..6..7...

Crossrefs

Sequence in context: A204481 A052356 A334024 * A252639 A252146 A110599

Adjacent sequences: A184090 A184091 A184092 * A184094 A184095 A184096

Keyword

nonn

Author

R. H. Hardin Jan 09 2011

Status

approved