Number of orientable strings of length n using a maximum of k colors, array read by descending antidiagonals, T(n,k) for n >= 1 and k >= 1.
A293500
Number of orientable strings of length n using a maximum of k colors, array read by descending antidiagonals, T(n,k) for n >= 1 and k >= 1.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =0a(6) =0a(7) =3a(8) =2a(9) =0a(10) =0a(11) =6a(12) =9a(13) =6a(14) =0a(15) =0a(16) =10a(17) =24a(18) =36a(19) =12a(20) =0a(21) =0a(22) =15a(23) =50a(24) =120a(25) =108a(26) =28a(27) =0a(28) =0a(29) =21
External references
- oeis: A293500