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 | 3 |
| 5 | 4 |
| 6 | 13 |
| 7 | 18 |
| 8 | 28 |
| 9 | 118 |
| 10 | 257 |
| 11 | 289 |
| 12 | 308 |
| 13 | 353 |
| 14 | 419 |
| 15 | 4890 |
| 16 | 4891 |
| 17 | 9113 |
| 18 | 16387 |
| 19 | 66562 |
| 20 | 322217 |
| 21 | 1874374 |
| 22 | 172449032 |
| 23 | 268533762 |
| 24 | 338749352 |
| 25 | 2204944815 |
| 26 | 2204944816 |
| 27 | 2415951874 |
| 28 | 3250054360 |
| 29 | 3250054361 |
| 30 | 3264337734 |
| 31 | 4424304070 |
| 32 | 4424304071 |