Expansion of Product_{k>=1} (1 + C(k)*x^k), where C(k) is the Catalan number A000108.
A318264
Expansion of Product_{k>=1} (1 + C(k)*x^k), where C(k) is the Catalan number A000108.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =7a(4) =19a(5) =66a(6) =212a(7) =743a(8) =2487a(9) =9012a(10) =31177a(11) =113775a(12) =404584a(13) =1490726a(14) =5376676a(15) =20028981a(16) =73068861a(17) =273659672a(18) =1009921813a(19) =3801386137a(20) =14125670266a(21) =53477758556a(22) =199950414035a(23) =759566205693
External references
- oeis: A318264