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 | 139 |
| 2 | 151 |
| 3 | 199 |
| 4 | 331 |
| 5 | 541 |
| 6 | 619 |
| 7 | 661 |
| 8 | 709 |
| 9 | 811 |
| 10 | 829 |
| 11 | 919 |
| 12 | 1069 |
| 13 | 1231 |
| 14 | 1279 |
| 15 | 1291 |
| 16 | 1381 |
| 17 | 1471 |
| 18 | 1579 |
| 19 | 1699 |
| 20 | 1999 |
| 21 | 2161 |
| 22 | 2221 |
| 23 | 2239 |
| 24 | 2251 |
| 25 | 2281 |
| 26 | 2371 |
| 27 | 2389 |
| 28 | 2521 |
| 29 | 2659 |
| 30 | 2689 |
| 31 | 2749 |
| 32 | 3001 |
| 33 | 3121 |
| 34 | 3271 |
| 35 | 3331 |
| 36 | 3391 |
| 37 | 3499 |
| 38 | 3529 |
| 39 | 3571 |
| 40 | 3631 |
| 41 | 3919 |
| 42 | 4021 |
| 43 | 4051 |
| 44 | 4159 |