Number of augmented André 3-signed permutations: E.g.f. (1-sin(3*x))^(-1/3).
A007788
Number of augmented André 3-signed permutations: E.g.f. (1-sin(3*x))^(-1/3).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =19a(4) =136a(5) =1201a(6) =13024a(7) =165619a(8) =2425216a(9) =40132801a(10) =740882944a(11) =15091932019a(12) =336257744896
External references
- oeis: A007788