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 | 3 |
| 2 | 10 |
| 3 | 25 |
| 4 | 51 |
| 5 | 108 |
| 6 | 236 |
| 7 | 555 |
| 8 | 1404 |
| 9 | 3689 |
| 10 | 10084 |
| 11 | 28156 |
| 12 | 80070 |
| 13 | 230567 |
| 14 | 670121 |
| 15 | 1962689 |
| 16 | 5782467 |
| 17 | 17124205 |
| 18 | 50930439 |
| 19 | 152043591 |
| 20 | 455389239 |
| 21 | 1367883343 |
| 22 | 4119448336 |
| 23 | 12434731101 |
| 24 | 37613760489 |
| 25 | 113995567274 |
| 26 | 346090346046 |
| 27 | 1052421430208 |
| 28 | 3205047877403 |
| 29 | 9774085385959 |
| 30 | 29845027519170 |
| 31 | 91239740502962 |
| 32 | 279240320955782 |
| 33 | 855506687516860 |
| 34 | 2623565774949376 |