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 | 6 |
| 3 | 15 |
| 4 | 49 |
| 5 | 110 |
| 6 | 154 |
| 7 | 278 |
| 8 | 496 |
| 9 | 1321 |
| 10 | 2686 |
| 11 | 3713 |
| 12 | 21766 |
| 13 | 27122 |
| 14 | 31637 |
| 15 | 56836 |
| 16 | 64084 |
| 17 | 97214 |
| 18 | 97235 |
| 19 | 206786 |
| 20 | 251611 |
| 21 | 538711 |
| 22 | 1763479 |
| 23 | 1903702 |
| 24 | 5379961 |
| 25 | 12053441 |
| 26 | 13894939 |
| 27 | 18999469 |
| 28 | 30059956 |
| 29 | 56816411 |
| 30 | 93926431 |
| 31 | 167535419 |
| 32 | 209955962 |
| 33 | 360506719 |
| 34 | 923566921 |