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 | 0 |
| 1 | 168 |
| 2 | 2022 |
| 3 | 15090 |
| 4 | 53160 |
| 5 | 196962 |
| 6 | 409956 |
| 7 | 1096368 |
| 8 | 2062140 |
| 9 | 4070796 |
| 10 | 6674010 |
| 11 | 12603174 |
| 12 | 18410352 |
| 13 | 31642836 |
| 14 | 45306438 |
| 15 | 67301682 |
| 16 | 93747984 |
| 17 | 142196892 |
| 18 | 183799392 |
| 19 | 267038772 |
| 20 | 342684960 |
| 21 | 458663640 |
| 22 | 582535842 |
| 23 | 793793994 |
| 24 | 963867732 |
| 25 | 1266864846 |
| 26 | 1550198598 |
| 27 | 1957887150 |
| 28 | 2357651670 |
| 29 | 3015489714 |