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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 11 |
| 6 | 31 |
| 7 | 71 |
| 8 | 150 |
| 9 | 334 |
| 10 | 826 |
| 11 | 2146 |
| 12 | 5498 |
| 13 | 13690 |
| 14 | 33762 |
| 15 | 84306 |
| 16 | 214451 |
| 17 | 551107 |
| 18 | 1417291 |
| 19 | 3637627 |
| 20 | 9343555 |
| 21 | 24096675 |
| 22 | 62439587 |
| 23 | 162331747 |
| 24 | 422773098 |
| 25 | 1102422546 |
| 26 | 2879207046 |
| 27 | 7534606366 |
| 28 | 19756893196 |
| 29 | 51894005428 |
| 30 | 136496647696 |
| 31 | 359478351816 |
| 32 | 947912008073 |