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 | 5 |
| 2 | 34 |
| 3 | 207 |
| 4 | 1244 |
| 5 | 7465 |
| 6 | 44790 |
| 7 | 268739 |
| 8 | 1612432 |
| 9 | 9674589 |
| 10 | 58047530 |
| 11 | 348285175 |
| 12 | 2089711044 |
| 13 | 12538266257 |
| 14 | 75229597534 |
| 15 | 451377585195 |
| 16 | 2708265511160 |
| 17 | 16249593066949 |
| 18 | 97497558401682 |
| 19 | 584985350410079 |
| 20 | 3509912102460460 |
| 21 | 21059472614762745 |
| 22 | 126356835688576454 |