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 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 3 |
| 6 | 9 |
| 7 | 1 |
| 8 | 4 |
| 9 | 18 |
| 10 | 52 |
| 11 | 1 |
| 12 | 5 |
| 13 | 30 |
| 14 | 130 |
| 15 | 375 |
| 16 | 1 |
| 17 | 6 |
| 18 | 45 |
| 19 | 260 |
| 20 | 1125 |
| 21 | 3246 |
| 22 | 1 |
| 23 | 7 |
| 24 | 63 |
| 25 | 455 |
| 26 | 2625 |
| 27 | 11361 |
| 28 | 32781 |
| 29 | 1 |
| 30 | 8 |
| 31 | 84 |
| 32 | 728 |
| 33 | 5250 |
| 34 | 30296 |
| 35 | 131124 |
| 36 | 378344 |
| 37 | 1 |
| 38 | 9 |
| 39 | 108 |
| 40 | 1092 |
| 41 | 9450 |
| 42 | 68166 |
| 43 | 393372 |
| 44 | 1702548 |
| 45 | 4912515 |
| 46 | 1 |
| 47 | 10 |
| 48 | 135 |
| 49 | 1560 |
| 50 | 15750 |
| 51 | 136332 |
| 52 | 983430 |
| 53 | 5675160 |
| 54 | 24562575 |
| 55 | 70872610 |