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 | 3 |
| 2 | 13 |
| 3 | 47 |
| 4 | 107 |
| 5 | 257 |
| 6 | 397 |
| 7 | 653 |
| 8 | 881 |
| 9 | 1279 |
| 10 | 1889 |
| 11 | 2293 |
| 12 | 3119 |
| 13 | 3847 |
| 14 | 4423 |
| 15 | 5323 |
| 16 | 6563 |
| 17 | 7937 |
| 18 | 8819 |
| 19 | 10391 |
| 20 | 11833 |
| 21 | 12889 |
| 22 | 14831 |
| 23 | 16477 |
| 24 | 18713 |
| 25 | 21599 |
| 26 | 23603 |
| 27 | 25189 |
| 28 | 27409 |
| 29 | 29063 |
| 30 | 31511 |
| 31 | 37159 |
| 32 | 39869 |
| 33 | 43321 |
| 34 | 45589 |
| 35 | 50923 |
| 36 | 53281 |
| 37 | 57271 |
| 38 | 61561 |
| 39 | 65173 |
| 40 | 69821 |
| 41 | 74383 |