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 | 3 |
| 3 | 5 |
| 4 | 5 |
| 5 | 16 |
| 6 | 18 |
| 7 | 78 |
| 8 | 102 |
| 9 | 120 |
| 10 | 144 |
| 11 | 251 |
| 12 | 363 |
| 13 | 1402 |
| 14 | 31169 |
| 15 | 88630 |
| 16 | 184655 |
| 17 | 259252 |
| 18 | 298770 |
| 19 | 4196070 |
| 20 | 38538874 |
| 21 | 616984563 |
| 22 | 1975413035 |
| 23 | 5345718057 |
| 24 | 27843871197 |
| 25 | 54516286513 |
| 26 | 334398528974 |
| 27 | 445879679626 |
| 28 | 495957494386 |
| 29 | 2450869042061 |
| 30 | 2629541150529 |
| 31 | 4088114099885 |