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 | 3 |
| 2 | 3 |
| 3 | 4 |
| 4 | 4 |
| 5 | 4 |
| 6 | 6 |
| 7 | 15 |
| 8 | 48 |
| 9 | 118 |
| 10 | 147 |
| 11 | 671 |
| 12 | 1026 |
| 13 | 3075 |
| 14 | 44641 |
| 15 | 48364 |
| 16 | 1868380 |
| 17 | 75080506 |
| 18 | 96848501 |
| 19 | 911582093 |
| 20 | 2511879981 |
| 21 | 8700005050 |
| 22 | 15888441652 |
| 23 | 108526838262 |
| 24 | 446779835336 |
| 25 | 632466801279 |
| 26 | 1084794852728 |
| 27 | 1184722346307 |
| 28 | 1657692322844 |
| 29 | 12376968750845 |
| 30 | 17341469111712 |
| 31 | 27996895637798 |
| 32 | 38935285631573 |