A215957 Number of horizontal, vertical and diagonal neighbor colorings of the even squares of an nX6 array with new integer colors introduced in row major order

2, 34, 1534, 145563, 30312074, 9260821180, 4761748786964, 3146896493234825

Offset

1,1

Comments

Column 6 of A215959

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for n=4
..0..x..1..x..2..x....0..x..1..x..2..x....0..x..1..x..2..x....0..x..1..x..0..x
..x..1..x..3..x..0....x..1..x..3..x..4....x..3..x..4..x..0....x..2..x..0..x..3
..3..x..2..x..0..x....1..x..0..x..5..x....1..x..5..x..0..x....1..x..0..x..4..x
..x..4..x..5..x..6....x..5..x..1..x..3....x..0..x..3..x..6....x..3..x..5..x..6

Crossrefs

Sequence in context: A367510 A187546 A195005 * A171732 A291903 A340863

Adjacent sequences: A215954 A215955 A215956 * A215958 A215959 A215960

Keyword

nonn

Author

R. H. Hardin Aug 28 2012

Status

approved