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 | 6 |
| 2 | 10 |
| 3 | 15 |
| 4 | 21 |
| 5 | 55 |
| 6 | 91 |
| 7 | 253 |
| 8 | 703 |
| 9 | 1081 |
| 10 | 1711 |
| 11 | 1891 |
| 12 | 2701 |
| 13 | 3403 |
| 14 | 5671 |
| 15 | 12403 |
| 16 | 13861 |
| 17 | 15931 |
| 18 | 18721 |
| 19 | 25651 |
| 20 | 34453 |
| 21 | 38503 |
| 22 | 49141 |
| 23 | 60031 |
| 24 | 64261 |
| 25 | 73153 |
| 26 | 79003 |
| 27 | 88831 |
| 28 | 104653 |
| 29 | 108811 |
| 30 | 114481 |
| 31 | 126253 |
| 32 | 146611 |
| 33 | 158203 |
| 34 | 171991 |
| 35 | 188191 |
| 36 | 218791 |
| 37 | 226801 |
| 38 | 258121 |
| 39 | 269011 |