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 A167842 #11 Aug 03 2022 02:34:10 %S A167842 101,787,12343,34543,54323,56543,654323,1234543,7654567,345676543, %T A167842 987654323,32123456789,34567876543,654323456789 %N A167842 Right-angled primes. %C A167842 Primes in A135602. %C A167842 Primes whose structure of digits represents a right angle. The vertex is an internal digit. In the graphic representation the points are connected by imaginary line segments from left to right. This sequence is finite. %Y A167842 Cf. A135602, A048398. %K A167842 base,nonn,fini,full,less %O A167842 1,1 %A A167842 _Omar E. Pol_, Nov 13 2009 %E A167842 More terms from _Jens Kruse Andersen_, Jun 26 2014