a(n) = (6*n + 5)^7.A016975a(n) = (6*n + 5)^7.Terms a(0) =78125a(1) =19487171a(2) =410338673a(3) =3404825447a(4) =17249876309a(5) =64339296875a(6) =194754273881a(7) =506623120463External referencesoeis: A016975