A215742 Number of horizontal, vertical, diagonal and antidiagonal neighbor colorings of the odd squares of an n X 5 array with new integer colors introduced in row major order.

1, 1, 5, 22, 1250, 24236, 4851360, 190497926, 83943993818, 5303141087778, 4173873098644366, 378359478068949014, 472112409203884877570, 57309542487149770566536, 104912731359552572271902248, 16280064095604977906371524266, 41397926646267697867589499650186

Offset

0,3

Links

Andrew Howroyd, Table of n, a(n) for n = 0..50

Example

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

Crossrefs

Column 5 of A215745.

Sequence in context: A271678 A002069 A298233 * A357948 A367721 A282688

Adjacent sequences: A215739 A215740 A215741 * A215743 A215744 A215745

Keyword

nonn

Author

R. H. Hardin, Aug 22 2012

Extensions

a(0)=1 prepended and terms a(10) and beyond from Andrew Howroyd, Jun 25 2017

Status

approved