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 | 7 |
| 2 | 18 |
| 3 | 19 |
| 4 | 136 |
| 5 | 349 |
| 6 | 357 |
| 7 | 1354 |
| 8 | 6996 |
| 9 | 7135 |
| 10 | 9531 |
| 11 | 11558 |
| 12 | 15996 |
| 13 | 17432 |
| 14 | 52118 |
| 15 | 151048 |
| 16 | 427802 |
| 17 | 821834 |
| 18 | 877819 |
| 19 | 972918 |
| 20 | 1046690 |
| 21 | 1540789 |
| 22 | 3653077 |
| 23 | 8200738 |
| 24 | 9628573 |
| 25 | 164153335 |
| 26 | 5607624822 |
| 27 | 86457467082 |
| 28 | 141885251873 |
| 29 | 151882622551 |