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 | 42 |
| 1 | 139 |
| 2 | 392 |
| 3 | 907 |
| 4 | 1941 |
| 5 | 3804 |
| 6 | 7128 |
| 7 | 12693 |
| 8 | 21893 |
| 9 | 36535 |
| 10 | 59521 |
| 11 | 94664 |
| 12 | 147794 |
| 13 | 226524 |
| 14 | 342006 |
| 15 | 508866 |
| 16 | 747753 |
| 17 | 1085635 |
| 18 | 1559725 |
| 19 | 2218272 |
| 20 | 3126541 |
| 21 | 4368724 |
| 22 | 6056705 |
| 23 | 8333955 |
| 24 | 11388614 |
| 25 | 15460291 |
| 26 | 20859497 |
| 27 | 27979454 |
| 28 | 37324367 |
| 29 | 49529018 |