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 | 15 |
| 2 | 65 |
| 3 | 671 |
| 4 | 3439 |
| 5 | 12209 |
| 6 | 102719 |
| 7 | 113521 |
| 8 | 178991 |
| 9 | 246559 |
| 10 | 515201 |
| 11 | 1124111 |
| 12 | 1342879 |
| 13 | 2964961 |
| 14 | 3940399 |
| 15 | 9951391 |
| 16 | 21254449 |
| 17 | 27220159 |
| 18 | 34209169 |
| 19 | 45259649 |
| 20 | 48986321 |
| 21 | 70710641 |
| 22 | 92110289 |
| 23 | 93084991 |
| 24 | 125620111 |
| 25 | 131687681 |
| 26 | 144402721 |
| 27 | 201792079 |
| 28 | 211782751 |
| 29 | 276694241 |