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 | 0 |
| 2 | 15 |
| 3 | 228 |
| 4 | 291 |
| 5 | 368 |
| 6 | 1575 |
| 7 | 1940 |
| 8 | 2387 |
| 9 | 9416 |
| 10 | 11543 |
| 11 | 14148 |
| 12 | 55115 |
| 13 | 67512 |
| 14 | 82695 |
| 15 | 321468 |
| 16 | 393723 |
| 17 | 482216 |
| 18 | 1873887 |
| 19 | 2295020 |
| 20 | 2810795 |
| 21 | 10922048 |
| 22 | 13376591 |
| 23 | 16382748 |
| 24 | 63658595 |
| 25 | 77964720 |
| 26 | 95485887 |
| 27 | 371029716 |
| 28 | 454411923 |
| 29 | 556532768 |