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 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 3 |
| 6 | 3 |
| 7 | 4 |
| 8 | 4 |
| 9 | 4 |
| 10 | 5 |
| 11 | 8 |
| 12 | 11 |
| 13 | 55 |
| 14 | 66 |
| 15 | 77 |
| 16 | 99 |
| 17 | 99 |
| 18 | 101 |
| 19 | 121 |
| 20 | 141 |
| 21 | 151 |
| 22 | 161 |
| 23 | 303 |
| 24 | 525 |
| 25 | 757 |
| 26 | 797 |
| 27 | 1551 |
| 28 | 2222 |
| 29 | 4114 |
| 30 | 4334 |
| 31 | 4884 |
| 32 | 5995 |
| 33 | 6336 |
| 34 | 8008 |
| 35 | 9119 |
| 36 | 9229 |
| 37 | 22222 |
| 38 | 33433 |
| 39 | 48684 |
| 40 | 53735 |
| 41 | 54645 |
| 42 | 55555 |
| 43 | 56465 |
| 44 | 61316 |
| 45 | 64046 |
| 46 | 72027 |
| 47 | 72727 |
| 48 | 84548 |
| 49 | 89998 |