Expansion of Sum_{k>=0} x^(2*k) / Product_{j=1..3*k} (1 - j * x).
A392727
Expansion of Sum_{k>=0} x^(2*k) / Product_{j=1..3*k} (1 - j * x).
Terms
- a(0) =1a(1) =0a(2) =1a(3) =6a(4) =26a(5) =111a(6) =568a(7) =3657a(8) =27008a(9) =211170a(10) =1715023a(11) =14649558a(12) =133591427a(13) =1304656188a(14) =13536385282a(15) =147608591505
External references
- oeis: A392727