Triangle T(n,k) (n>=1, rows have irregular lengths) giving number of arrangements of k nonattacking princes on an n X n staggered hexagonal torus board.

A067015

Triangle T(n,k) (n>=1, rows have irregular lengths) giving number of arrangements of k nonattacking princes on an n X n staggered hexagonal torus board.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =1a(4) =9a(5) =9a(6) =3a(7) =1a(8) =16a(9) =72a(10) =96a(11) =32a(12) =1a(13) =25a(14) =225a(15) =910a(16) =1695a(17) =1355a(18) =440a(19) =70a(20) =5a(21) =1a(22) =36a(23) =522a(24) =3936a(25) =16659a(26) =39996a(27) =52860a(28) =36108a(29) =11871

External references