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 A364185 #17 Jul 16 2023 10:35:11 %S A364185 1,1,1,1,1,1,1,1,2,2,2,2,3,3,3,4,4,5,5,6,6,7,8,8,9,1,1,1,1,1,1,1,2,2, %T A364185 2,2,3,3,3,4,4,4,5,6,6,7,8,8,9,1,1,1,1,1,1,1,2,2,2,2,3,3,3,4,4,4,5,5, %U A364185 6,7,7,8,9,1,1,1,1,1,1,1,2,2,2,2,2,3,3,3,4,4,5,5,6,7,7,8,9,1,1,1,1 %N A364185 Leading digit of 11^n. %H A364185 Seiichi Manyama, <a href="/A364185/b364185.txt">Table of n, a(n) for n = 0..10000</a> %F A364185 a(n) = A000030(A001020(n)). %t A364185 a[n_] := IntegerDigits[11^n][[1]]; Array[a, 100, 0] (* _Amiram Eldar_, Jul 15 2023 *) %o A364185 (PARI) a(n) = digits(11^n)[1]; %Y A364185 Cf. A008952, A060956, A111395, A362871, A363093, A363249. %Y A364185 Cf. A000030, A001020, A008571. %K A364185 nonn,base,easy %O A364185 0,9 %A A364185 _Seiichi Manyama_, Jul 15 2023