Number of ternary strings of length 2*n that have more 0's than the combined number of 1's and 2's.
A386670
Number of ternary strings of length 2*n that have more 0's than the combined number of 1's and 2's.
Terms
- a(0) =0a(1) =1a(2) =9a(3) =73a(4) =577a(5) =4521a(6) =35313a(7) =275577a(8) =2150721a(9) =16793929a(10) =131230609a(11) =1026283545a(12) =8032614625a(13) =62921342953a(14) =493262044977
External references
- oeis: A386670