A184027 1/8 the number of (n+1)X8 0..3 arrays with all 2X2 subblock sums the same

25538, 35771, 53948, 94469, 177386, 374381, 829724, 1994441, 4970738, 13142141, 35742788, 101630489

Offset

1,1

Comments

Column 7 of A184029

Links

Table of n, a(n) for n=1..12.

Example

Some solutions for 4X8
..0..2..2..1..3..0..3..0....2..2..0..0..0..1..1..0....2..0..2..2..0..1..2..1
..3..0..1..1..0..2..0..2....1..1..3..3..3..2..2..3....0..3..0..1..2..2..0..2
..0..2..2..1..3..0..3..0....2..2..0..0..0..1..1..0....2..0..2..2..0..1..2..1
..3..0..1..1..0..2..0..2....1..1..3..3..3..2..2..3....1..2..1..0..3..1..1..1

Crossrefs

Sequence in context: A237865 A202646 A210093 * A023350 A163186 A232838

Adjacent sequences: A184024 A184025 A184026 * A184028 A184029 A184030

Keyword

nonn

Author

R. H. Hardin Jan 08 2011

Status

approved