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 | 9 |
| 2 | 46 |
| 3 | 174 |
| 4 | 541 |
| 5 | 1461 |
| 6 | 3544 |
| 7 | 7896 |
| 8 | 16414 |
| 9 | 32206 |
| 10 | 60172 |
| 11 | 107788 |
| 12 | 186142 |
| 13 | 311278 |
| 14 | 505912 |
| 15 | 801592 |
| 16 | 1241383 |
| 17 | 1883167 |
| 18 | 2803658 |
| 19 | 4103242 |
| 20 | 5911763 |
| 21 | 8395387 |
| 22 | 11764688 |
| 23 | 16284112 |
| 24 | 22282988 |
| 25 | 30168268 |
| 26 | 40439192 |
| 27 | 53704088 |
| 28 | 70699532 |
| 29 | 92312108 |
| 30 | 119603024 |
| 31 | 153835856 |
| 32 | 196507709 |
| 33 | 249384101 |