a(n) = (7*n + 3)^7.A017023a(n) = (7*n + 3)^7.Terms a(0) =2187a(1) =10000000a(2) =410338673a(3) =4586471424a(4) =27512614111a(5) =114415582592a(6) =373669453125External referencesoeis: A017023