a(n) = (8*n + 4)^7 = 4^7*(2*n + 1)^7.

A017119

a(n) = (8*n + 4)^7 = 4^7*(2*n + 1)^7.

Terms

    a(0) =16384a(1) =35831808a(2) =1280000000a(3) =13492928512a(4) =78364164096a(5) =319277809664

External references