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 | 3 |
| 2 | 9 |
| 3 | 23 |
| 4 | 54 |
| 5 | 118 |
| 6 | 246 |
| 7 | 489 |
| 8 | 940 |
| 9 | 1751 |
| 10 | 3177 |
| 11 | 5630 |
| 12 | 9776 |
| 13 | 16659 |
| 14 | 27922 |
| 15 | 46092 |
| 16 | 75039 |
| 17 | 120615 |
| 18 | 191611 |
| 19 | 301086 |
| 20 | 468342 |
| 21 | 721638 |
| 22 | 1102113 |
| 23 | 1669226 |
| 24 | 2508429 |
| 25 | 3741741 |
| 26 | 5542532 |
| 27 | 8155720 |
| 28 | 11925654 |
| 29 | 17334077 |
| 30 | 25051940 |
| 31 | 36009468 |
| 32 | 51491111 |
| 33 | 73263043 |
| 34 | 103744575 |