Number of ways to place n nonattacking bishops on black squares of a 2n X 2n board.

A191236

Number of ways to place n nonattacking bishops on black squares of a 2n X 2n board.

Terms

    a(0) =1a(1) =2a(2) =14a(3) =184a(4) =3532a(5) =89256a(6) =2800016a(7) =104967808a(8) =4578528464a(9) =227816059360

External references