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 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 4 |
| 6 | 9 |
| 7 | 20 |
| 8 | 35 |
| 9 | 102 |
| 10 | 160 |
| 11 | 736 |
| 12 | 930 |
| 13 | 5972 |
| 14 | 6766 |
| 15 | 59017 |
| 16 | 61814 |
| 17 | 671651 |
| 18 | 675379 |
| 19 | 8844028 |
| 20 | 8675583 |
| 21 | 130880467 |
| 22 | 126385830 |
| 23 | 2163551657 |
| 24 | 2049560059 |
| 25 | 39112954305 |
| 26 | 36883483406 |
| 27 | 768337929193 |
| 28 | 720918897940 |
| 29 | 16279025598443 |
| 30 | 15303083773040 |
| 31 | 373743187469167 |
| 32 | 349148771223261 |
| 33 | 9095126347788632 |