a(n) = (8*n + 1)^7.A017083a(n) = (8*n + 1)^7.Terms a(0) =1a(1) =4782969a(2) =410338673a(3) =6103515625a(4) =42618442977a(5) =194754273881a(6) =678223072849External referencesoeis: A017083