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 | 5 |
| 2 | 7 |
| 3 | 10 |
| 4 | 15 |
| 5 | 18 |
| 6 | 29 |
| 7 | 47 |
| 8 | 113 |
| 9 | 163 |
| 10 | 269 |
| 11 | 1150 |
| 12 | 1293 |
| 13 | 1881 |
| 14 | 22173 |
| 15 | 44563 |
| 16 | 95683 |
| 17 | 261955 |
| 18 | 1179415 |
| 19 | 1295936 |
| 20 | 11451171 |
| 21 | 26867679 |
| 22 | 42531919 |
| 23 | 247791599 |
| 24 | 429914163 |
| 25 | 445379527 |
| 26 | 560533869 |
| 27 | 619222313 |
| 28 | 2147478019 |
| 29 | 2971786617 |
| 30 | 3474640372 |