G.f.: exp( Sum_{n>=1} (3*n)!/(3!*n!^3) * x^n/n ).
A229452
G.f.: exp( Sum_{n>=1} (3*n)!/(3!*n!^3) * x^n/n ).
Terms
- a(0) =1a(1) =1a(2) =8a(3) =101a(4) =1569a(5) =27445a(6) =518407a(7) =10333243a(8) =214320244a(9) =4583132411a(10) =100411556533
External references
- oeis: A229452