A229021 Record values in A226657.
5, 7, 23, 389, 409, 1511, 5309, 7351, 37223, 142811, 763271, 8066923, 9182389, 10237391, 24374033, 70353383, 128463691, 334100083, 358453847, 610611193
Offset: 1
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.