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 | 13 |
| 2 | 53 |
| 3 | 113 |
| 4 | 213 |
| 5 | 453 |
| 6 | 853 |
| 7 | 909 |
| 8 | 1813 |
| 9 | 3413 |
| 10 | 3637 |
| 11 | 7253 |
| 12 | 7281 |
| 13 | 13653 |
| 14 | 14549 |
| 15 | 29013 |
| 16 | 29125 |
| 17 | 54613 |
| 18 | 58197 |
| 19 | 58253 |
| 20 | 116053 |
| 21 | 116501 |
| 22 | 218453 |
| 23 | 232789 |
| 24 | 233013 |
| 25 | 464213 |
| 26 | 466005 |
| 27 | 466033 |
| 28 | 873813 |
| 29 | 931157 |
| 30 | 932053 |
| 31 | 1856853 |
| 32 | 1864021 |
| 33 | 1864133 |
| 34 | 3495253 |
| 35 | 3724629 |
| 36 | 3728213 |