A196494 Indices of palindromic centered 22-gonal numbers. (A195902).
1, 4156, 524962, 321895111, 358542860, 362349816, 422820435, 560670367, 565390537, 4192653610, 593651537079
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.