The On-Line Encyclopedia of Integer Sequences (OEIS)

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A291187 revision #19

A291187

Number of 2 X n Sudoku grids ((2*n) X (2*n) grids divided into 2 X n boxes).

1

288, 28200960, 29136487207403520, 1903816047972624930994913280000

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OFFSET

2,1

LINKS

Table of n, a(n) for n=2..5.

Jordy Vanpoucke, Mutually orthogonal latin squares and their generalizations

Wikipedia, Mathematics of Sudoku

CROSSREFS

Cf. A107739, A291188.

Sequence in context: A047805 A173150 A282332 * A296608 A306651 A272164

Adjacent sequences: A291184 A291185 A291186 * A291188 A291189 A291190

KEYWORD

nonn,more

AUTHOR

Seiichi Manyama, Aug 19 2017

STATUS

editing