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 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 7 |
| 7 | 18 |
| 8 | 31 |
| 9 | 42 |
| 10 | 44 |
| 11 | 405 |
| 12 | 472 |
| 13 | 729 |
| 14 | 941 |
| 15 | 5071 |
| 16 | 6313 |
| 17 | 8675 |
| 18 | 9853 |
| 19 | 21066 |
| 20 | 31591 |
| 21 | 90601 |
| 22 | 447014 |
| 23 | 514121 |
| 24 | 674557 |
| 25 | 713322 |
| 26 | 770074 |
| 27 | 4606468 |
| 28 | 7359831 |
| 29 | 7575552 |
| 30 | 8089735 |
| 31 | 19520951 |
| 32 | 52494292 |
| 33 | 69005989 |
| 34 | 106799181 |
| 35 | 474396516 |
| 36 | 777547433 |
| 37 | 2586342311 |
| 38 | 3016782802 |