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 | 0 |
| 3 | 0 |
| 4 | 2 |
| 5 | 18 |
| 6 | 77 |
| 7 | 241 |
| 8 | 623 |
| 9 | 1406 |
| 10 | 2868 |
| 11 | 5415 |
| 12 | 9608 |
| 13 | 16203 |
| 14 | 26188 |
| 15 | 40830 |
| 16 | 61720 |
| 17 | 90827 |
| 18 | 130548 |
| 19 | 183773 |
| 20 | 253942 |
| 21 | 345116 |
| 22 | 462042 |
| 23 | 610231 |
| 24 | 796034 |
| 25 | 1026724 |
| 26 | 1310578 |
| 27 | 1656969 |
| 28 | 2076457 |
| 29 | 2580887 |
| 30 | 3183486 |
| 31 | 3898970 |
| 32 | 4743648 |
| 33 | 5735537 |
| 34 | 6894474 |
| 35 | 8242236 |
| 36 | 9802664 |