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 | 4 |
| 2 | 14 |
| 3 | 45 |
| 4 | 130 |
| 5 | 336 |
| 6 | 785 |
| 7 | 1682 |
| 8 | 3351 |
| 9 | 6280 |
| 10 | 11176 |
| 11 | 19031 |
| 12 | 31200 |
| 13 | 49492 |
| 14 | 76275 |
| 15 | 114596 |
| 16 | 168317 |
| 17 | 242268 |
| 18 | 342418 |
| 19 | 476065 |
| 20 | 652046 |
| 21 | 880968 |
| 22 | 1175461 |
| 23 | 1550454 |
| 24 | 2023475 |
| 25 | 2614976 |
| 26 | 3348684 |
| 27 | 4251979 |
| 28 | 5356300 |
| 29 | 6697580 |
| 30 | 8316711 |
| 31 | 10260040 |
| 32 | 12579897 |