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 | 3 |
| 3 | 17 |
| 4 | 47 |
| 5 | 99 |
| 6 | 179 |
| 7 | 293 |
| 8 | 447 |
| 9 | 647 |
| 10 | 899 |
| 11 | 1209 |
| 12 | 1583 |
| 13 | 2027 |
| 14 | 2547 |
| 15 | 3149 |
| 16 | 3839 |
| 17 | 4623 |
| 18 | 5507 |
| 19 | 6497 |
| 20 | 7599 |
| 21 | 8819 |
| 22 | 10163 |
| 23 | 11637 |
| 24 | 13247 |
| 25 | 14999 |
| 26 | 16899 |
| 27 | 18953 |
| 28 | 21167 |
| 29 | 23547 |
| 30 | 26099 |