a(n) = p*(p - 1)*(4051*p^4 - 4130*p^3 + 1445*p^2 - 190*p + 264)/720, where p = prime(n).
A273224
a(n) = p*(p - 1)*(4051*p^4 - 4130*p^3 + 1445*p^2 - 190*p + 264)/720, where p = prime(n).
Terms
- a(0) =104a(1) =1911a(2) =56974a(3) =488810a(4) =8247965a(5) =23154950a(6) =120309952a(7) =237557475a(8) =761914054a(9) =3119071046a(10) =4675225940a(11) =13662251406a(12) =25431242200a(13) =33922355957a(14) =58079673968a(15) =120014329006a(16) =229294119649a(17) =280383632390a(18) =493768590887a(19) =700437412570a(20) =828128942424
External references
- oeis: A273224