a(n) = binomial(prime(4+n), prime(4)).

Terms

a(0) =1a(1) =330a(2) =1716a(3) =19448a(4) =50388a(5) =245157a(6) =1560780a(7) =2629575a(8) =10295472a(9) =22481940a(10) =32224114a(11) =62891499a(12) =154143080a(13) =341149446a(14) =436270780a(15) =869648208a(16) =1329890705a(17) =1629348612a(18) =2898753715a(19) =4151918628a(20) =6890268572a(21) =12846240784a(22) =17199613200a(23) =19813501785a(24) =26075972546a(25) =29796772356a(26) =38620298376