Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #4 May 13 2019 08:12:04
%S 2,9,15625,191581231380566414401,
%T 92709068817830061978520606494193845859707401497097037749844778027824097442147966967457359038488841338006006032592594389655201
%N a(n) = prime(n)^(n!).
%C A subsequence of A325619 (numbers whose prime indices have reciprocal factorial sum equal to 1).
%t Table[Prime[n]^n!,{n,5}]
%Y Cf. A056239, A112798.
%Y Factorial numbers: A000142, A007489, A022559, A064986, A108731, A115944, A284605, A325508, A325616.
%Y Reciprocal factorial sum: A002966, A051908, A316855, A325618, A325619.
%K nonn
%O 1,1
%A _Gus Wiseman_, May 13 2019