a(n) = B(n)*C(n), where B(n) are Bell numbers (A000110) and C(n) are Catalan numbers (A000108).
A064299
a(n) = B(n)*C(n), where B(n) are Bell numbers (A000110) and C(n) are Catalan numbers (A000108).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =25a(4) =210a(5) =2184a(6) =26796a(7) =376233a(8) =5920200a(9) =102816714a(10) =1947916100a(11) =39890416020a(12) =876478739164
External references
- oeis: A064299