Array read by antidiagonals: A(n,m) is the number of ways to place non-adjacent counters on the black squares of a 2n-1 X 2m-1 checker board.

A331406

Array read by antidiagonals: A(n,m) is the number of ways to place non-adjacent counters on the black squares of a 2n-1 X 2m-1 checker board.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =4a(8) =4a(9) =1a(10) =1a(11) =8a(12) =17a(13) =8a(14) =1a(15) =1a(16) =16a(17) =73a(18) =73a(19) =16a(20) =1a(21) =1a(22) =32a(23) =314a(24) =689a(25) =314a(26) =32a(27) =1a(28) =1a(29) =64

External references