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 A360004 #39 Mar 10 2023 19:39:10 %S A360004 4,9,6,8,9,9,8,4,6,6,4,8,9,8,8,4,9,6,9,9,9,8,9,4,9,4,4,9,8,6,4,6,8,6, %T A360004 8,9,9,8,6,8,4,8,4,6,9,8,4,8,8,6,8,6,6,4,9,8,4,4,6,9,8,9,4,8,8,4,8,4, %U A360004 8,4,9,8,9,6,4,4,6,9,4,8,9,4,9,8,9,6,4,4,8,8,9,6,6,9,4,4,6,8,4 %N A360004 Sequence of composite digits as they appear in Pi. %H A360004 Miles Galvin, <a href="/A360004/b360004.txt">Table of n, a(n) for n = 1..10000</a> %e A360004 Pi = 3.14159265358... so we get 4, 9, 6, 8, ... %t A360004 Select[First[RealDigits[N[Pi,225]]],CompositeQ] (* _Stefano Spezia_, Jan 21 2023 *) %Y A360004 Cf. A000796, A002808, A073264, A086385, A086399. %K A360004 nonn,base,easy %O A360004 1,1 %A A360004 _Miles Galvin_, Jan 21 2023