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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 34 |
| 3 | 153 |
| 4 | 2245 |
| 5 | 14824 |
| 6 | 167089 |
| 7 | 1292697 |
| 8 | 12988816 |
| 9 | 108435745 |
| 10 | 1031151241 |
| 11 | 8940739824 |
| 12 | 82741005829 |
| 13 | 731164253833 |
| 14 | 6675498237130 |
| 15 | 59554200469113 |
| 16 | 540061286536921 |
| 17 | 4841110033666048 |
| 18 | 43752732573098281 |
| 19 | 393139145126822985 |
| 20 | 3547073578562247994 |
| 21 | 31910388243436817641 |