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.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 7 |
| 3 | 106 |
| 4 | 113 |
| 5 | 33102 |
| 6 | 99532 |
| 7 | 265381 |
| 8 | 1360120 |
| 9 | 1725033 |
| 10 | 25510582 |
| 11 | 78256779 |
| 12 | 340262731 |
| 13 | 811528438 |
| 14 | 1963319607 |
| 15 | 6701487259 |
| 16 | 1142027682075 |
| 17 | 2851718461558 |
| 18 | 136308121570117 |
| 19 | 1952799169684491 |
| 20 | 9627687726852338 |
| 21 | 21208174623389167 |
| 22 | 136876735467187340 |
| 23 | 842468587426513207 |