A215922 Number of diagonal and antidiagonal neighbor colorings of the odd squares of an nX5 array with new integer colors introduced in row major order

2, 15, 136, 12840, 322768, 87852626, 4044766240, 2227156082842, 157752739276184, 148049849095504726, 14670983946354664200, 21183598567292002167082, 2765649842153732133940784, 5737167377815628378510929822

Offset

1,1

Comments

Column 5 of A215924

Links

R. H. Hardin, Table of n, a(n) for n = 1..25

Example

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

Crossrefs

Sequence in context: A371579 A214043 A347993 * A285449 A371584 A288950

Adjacent sequences: A215919 A215920 A215921 * A215923 A215924 A215925

Keyword

nonn

Author

R. H. Hardin Aug 27 2012

Status

approved