Generalized Euler numbers. Square array A(n,k), n >= 1, k >= 0, read by antidiagonals. A(n,k) = n-alternating permutations of length n*k.
A181985
Generalized Euler numbers. Square array A(n,k), n >= 1, k >= 0, read by antidiagonals. A(n,k) = n-alternating permutations of length n*k.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =5a(9) =1a(10) =1a(11) =1a(12) =19a(13) =61a(14) =1a(15) =1a(16) =1a(17) =69a(18) =1513a(19) =1385a(20) =1a(21) =1a(22) =1a(23) =251a(24) =33661a(25) =315523a(26) =50521a(27) =1a(28) =1a(29) =1
External references
- oeis: A181985