Number of ternary strings of length 2*n that have fewer 0's than the combined number of 1's and 2's.
A387012
Number of ternary strings of length 2*n that have fewer 0's than the combined number of 1's and 2's.
Terms
- a(0) =0a(1) =4a(2) =48a(3) =496a(4) =4864a(5) =46464a(6) =436992a(7) =4068096a(8) =37601280a(9) =345733120a(10) =3166363648a(11) =28910051328a(12) =263320698880
External references
- oeis: A387012