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 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 3 |
| 7 | 5 |
| 8 | 7 |
| 9 | 9 |
| 10 | 21 |
| 11 | 37 |
| 12 | 49 |
| 13 | 65 |
| 14 | 151 |
| 15 | 265 |
| 16 | 351 |
| 17 | 465 |
| 18 | 1081 |
| 19 | 1897 |
| 20 | 2513 |
| 21 | 3329 |
| 22 | 7739 |
| 23 | 13581 |
| 24 | 17991 |
| 25 | 23833 |
| 26 | 55405 |
| 27 | 97229 |
| 28 | 128801 |
| 29 | 170625 |
| 30 | 396655 |
| 31 | 696081 |
| 32 | 922111 |
| 33 | 1221537 |
| 34 | 2839729 |
| 35 | 4983377 |
| 36 | 6601569 |
| 37 | 8745217 |
| 38 | 20330163 |
| 39 | 35676949 |
| 40 | 47261895 |
| 41 | 62608681 |