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 | 7 |
| 3 | 31 |
| 4 | 73 |
| 5 | 151 |
| 6 | 217 |
| 7 | 511 |
| 8 | 631 |
| 9 | 1057 |
| 10 | 2263 |
| 11 | 4417 |
| 12 | 4681 |
| 13 | 11023 |
| 14 | 15841 |
| 15 | 19561 |
| 16 | 23311 |
| 17 | 32767 |
| 18 | 46063 |
| 19 | 77161 |
| 20 | 95281 |
| 21 | 136927 |
| 22 | 163177 |
| 23 | 322441 |
| 24 | 341713 |
| 25 | 666967 |
| 26 | 722641 |
| 27 | 1427953 |
| 28 | 1701703 |
| 29 | 2391991 |
| 30 | 2953711 |
| 31 | 3519961 |