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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 4 |
| 6 | 13 |
| 7 | 20 |
| 8 | 67 |
| 9 | 110 |
| 10 | 383 |
| 11 | 663 |
| 12 | 2346 |
| 13 | 4217 |
| 14 | 15118 |
| 15 | 27979 |
| 16 | 101092 |
| 17 | 191440 |
| 18 | 695474 |
| 19 | 1341974 |
| 20 | 4893067 |
| 21 | 9589567 |
| 22 | 35055011 |
| 23 | 69612556 |
| 24 | 254923825 |
| 25 | 511987473 |
| 26 | 1877232869 |
| 27 | 3807503552 |
| 28 | 13972144807 |
| 29 | 28585315026 |
| 30 | 104955228432 |
| 31 | 216381073935 |
| 32 | 794739865822 |