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A251530 revision #6

A251530

Number of ways to place any number of black and any number of white nonattacking knights on a (n+2) X (5+2) board.

31361437, 4060878845, 629694824303, 85453027245665, 11726484486571601, 1671396405843418205, 239415740786170785059, 34268623489221568471683, 4926792732223129880488261, 710174571545415147604020125

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 5 of A251531.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..11

EXAMPLE

Some solutions for n=1

..0..0..0..1..1..0..0....0..0..0..0..0..0..2....0..0..0..0..0..0..2

..0..0..0..0..0..0..1....0..0..0..2..2..2..1....0..0..0..1..0..0..2

..0..0..0..0..1..0..0....0..0..0..2..1..0..0....0..0..2..2..2..0..0