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 | 15 |
| 4 | 96 |
| 5 | 330 |
| 6 | 855 |
| 7 | 1866 |
| 8 | 3624 |
| 9 | 6468 |
| 10 | 10818 |
| 11 | 17193 |
| 12 | 26208 |
| 13 | 38598 |
| 14 | 55209 |
| 15 | 77028 |
| 16 | 105168 |
| 17 | 140904 |
| 18 | 185652 |
| 19 | 241011 |
| 20 | 308736 |
| 21 | 390786 |
| 22 | 489291 |
| 23 | 606606 |
| 24 | 745272 |
| 25 | 908076 |
| 26 | 1098006 |
| 27 | 1318317 |
| 28 | 1572480 |
| 29 | 1864254 |
| 30 | 2197629 |
| 31 | 2576904 |
| 32 | 3006624 |
| 33 | 3491664 |
| 34 | 4037160 |
| 35 | 4648599 |
| 36 | 5331744 |
| 37 | 6092730 |