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 | 11 |
| 3 | 35 |
| 4 | 88 |
| 5 | 461 |
| 6 | 2050 |
| 7 | 8057 |
| 8 | 35640 |
| 9 | 158090 |
| 10 | 679629 |
| 11 | 2963173 |
| 12 | 12981912 |
| 13 | 56560118 |
| 14 | 246687460 |
| 15 | 1077347659 |
| 16 | 4701310128 |
| 17 | 20514731834 |
| 18 | 89541862920 |
| 19 | 390793087220 |
| 20 | 1705499848917 |
| 21 | 7443466123759 |
| 22 | 32485974265409 |
| 23 | 141779148752373 |