Number A(n,k) of sequences with k copies each of 1,2,...,n avoiding the pattern 12...n; square array A(n,k), n>=0, k>=0, read by antidiagonals.
A269129
Number A(n,k) of sequences with k copies each of 1,2,...,n avoiding the pattern 12...n; square array A(n,k), n>=0, k>=0, read by antidiagonals.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =0a(4) =0a(5) =1a(6) =0a(7) =0a(8) =1a(9) =1a(10) =0a(11) =0a(12) =1a(13) =5a(14) =1a(15) =0a(16) =0a(17) =1a(18) =43a(19) =23a(20) =1a(21) =0a(22) =0a(23) =1a(24) =374a(25) =1879a(26) =119a(27) =1a(28) =0a(29) =0
External references
- oeis: A269129