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 | 21 |
| 2 | 32 |
| 3 | 53 |
| 4 | 74 |
| 5 | 115 |
| 6 | 136 |
| 7 | 177 |
| 8 | 198 |
| 9 | 239 |
| 10 | 2910 |
| 11 | 3111 |
| 12 | 3712 |
| 13 | 4113 |
| 14 | 4314 |
| 15 | 4715 |
| 16 | 5316 |
| 17 | 5917 |
| 18 | 6118 |
| 19 | 6719 |
| 20 | 7120 |
| 21 | 7321 |
| 22 | 7922 |
| 23 | 8323 |
| 24 | 8924 |
| 25 | 9725 |
| 26 | 10126 |
| 27 | 10327 |
| 28 | 10728 |
| 29 | 10929 |
| 30 | 11330 |
| 31 | 12731 |
| 32 | 13132 |
| 33 | 13733 |
| 34 | 13934 |
| 35 | 14935 |
| 36 | 15136 |
| 37 | 15737 |
| 38 | 16338 |
| 39 | 16739 |
| 40 | 17340 |