Number of ternary strings of length 2*n that have at least one 0 but less 0's than the combined number of 1's and 2's.
A385252
Number of ternary strings of length 2*n that have at least one 0 but less 0's than the combined number of 1's and 2's.
Terms
- a(0) =0a(1) =0a(2) =32a(3) =432a(4) =4608a(5) =45440a(6) =432896a(7) =4051712a(8) =37535744a(9) =345470976a(10) =3165315072a(11) =28905857024a(12) =263303921664
External references
- oeis: A385252