a(n) = p * (n^p) - 1 where p = prime(n).A100768a(n) = p * (n^p) - 1 where p = prime(n).Terms a(0) =1a(1) =23a(2) =1214a(3) =114687a(4) =537109374a(5) =169789022207External referencesoeis: A100768