a(n) = n^4*(n^6 + 1)/2.

A168220

a(n) = n^4*(n^6 + 1)/2.

Terms

    a(0) =0a(1) =1a(2) =520a(3) =29565a(4) =524416a(5) =4883125a(6) =30233736a(7) =141238825a(8) =536872960a(9) =1743395481a(10) =5000005000a(11) =12968719621a(12) =30958692480a(13) =68929260205a(14) =144627346696a(15) =288325220625a(16) =549755846656

External references