This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A353946 #5 May 13 2022 09:53:00
%S A353946 0,2,4,4,8,8,81,16,81,256,1024,1024,4096,729,4096,15625,78125,16384,
%T A353946 390625,65536,390625,1679616,10077696,10077696,10077696,10077696,
%U A353946 40353607,40353607,282475249,282475249,8589934592,1977326743,1977326743,8589934592,8589934592,31381059609,1000000000000
%N A353946 a(n) = (pi(2n-1) - pi(n-1))^pi(n) for n > 1, a(1) = 0.
%C A353946 Number of functions from P to Q, where P is the set of primes <= n and Q is the set of primes q such that n <= q <= 2n-1.
%F A353946 a(n) = A035250(n)^A000720(n) for n > 1, a(1) = 0.
%t A353946 Join[{0}, Table[(PrimePi[2 n - 1] - PrimePi[n - 1])^PrimePi[n], {n, 2, 30}]]
%Y A353946 Cf. A000720 (pi), A035250, A352749.
%K A353946 nonn
%O A353946 1,2
%A A353946 _Wesley Ivan Hurt_, May 12 2022