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 | 1 |
| 3 | 3 |
| 4 | 3 |
| 5 | 7 |
| 6 | 30 |
| 7 | 51 |
| 8 | 42 |
| 9 | 15 |
| 10 | 145 |
| 11 | 753 |
| 12 | 1656 |
| 13 | 1995 |
| 14 | 1410 |
| 15 | 567 |
| 16 | 105 |
| 17 | 6631 |
| 18 | 39048 |
| 19 | 100704 |
| 20 | 149394 |
| 21 | 140475 |
| 22 | 86562 |
| 23 | 34566 |
| 24 | 8316 |
| 25 | 945 |
| 26 | 566641 |
| 27 | 3656439 |
| 28 | 10546413 |
| 29 | 17972598 |
| 30 | 20133921 |
| 31 | 15581349 |
| 32 | 8493555 |
| 33 | 3246642 |
| 34 | 841239 |
| 35 | 135135 |
| 36 | 10395 |