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 | 2 |
| 3 | 7 |
| 4 | 18 |
| 5 | 31 |
| 6 | 48 |
| 7 | 71 |
| 8 | 96 |
| 9 | 125 |
| 10 | 158 |
| 11 | 193 |
| 12 | 232 |
| 13 | 273 |
| 14 | 316 |
| 15 | 363 |
| 16 | 416 |
| 17 | 475 |
| 18 | 536 |
| 19 | 599 |
| 20 | 664 |
| 21 | 731 |
| 22 | 802 |
| 23 | 875 |
| 24 | 952 |
| 25 | 1033 |
| 26 | 1116 |
| 27 | 1201 |
| 28 | 1290 |
| 29 | 1383 |
| 30 | 1478 |
| 31 | 1579 |