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 A089542 #9 Aug 01 2021 03:44:56 %S A089542 4,4,33,259,3127,46661,823549,16777219,387420493,10000000003, %T A089542 285311670617,8916100448287,302875106592259,11112006825558019, %U A089542 437893890380859379,18446744073709551617,827240261886336764197,39346408075296537575443,1978419655660313589124007 %N A089542 a(n) is the least semiprime > n^n. %F A089542 a(n) = n^n + A085753(n). %Y A089542 Cf. A001358, A085753, A089539, A089543, A089544. %K A089542 nonn %O A089542 1,1 %A A089542 _Ray Chandler_, Nov 09 2003 %E A089542 Name clarified by and more terms from _Jinyuan Wang_, Aug 01 2021