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 A366830 #13 Dec 17 2023 11:20:47 %S A366830 5,1610,5833,82699856,9633661255,17292288245,78246420246 %N A366830 Self-locating strings within Pi: numbers n such that the reverse string n starts at position n in the decimal digits of Pi, where 3 is the first digit. %e A366830 1610 is a term because '0161' starts at position 1610: %e A366830 Position 1 2 3 4 ... 1610 1611 1612 1613 ... %e A366830 Pi 3 1 4 1 ... 0 1 6 1 ... %Y A366830 Cf. A057679, A057680, A366831. %K A366830 base,nonn,more %O A366830 1,1 %A A366830 _J. Volkmar Schmidt_, Oct 31 2023