Number of ways to place 6n nonattacking kings on a 12 x 2n chessboard.

A174154

Number of ways to place 6n nonattacking kings on a 12 x 2n chessboard.

Terms

    a(0) =1a(1) =448a(2) =30319a(3) =976640a(4) =21137959a(5) =357365350a(6) =5109144543a(7) =64737165162a(8) =749160010737

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