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) |
|---|---|
| 0 | 13 |
| 1 | 21 |
| 2 | 25 |
| 3 | 45 |
| 4 | 69 |
| 5 | 97 |
| 6 | 129 |
| 7 | 177 |
| 8 | 221 |
| 9 | 277 |
| 10 | 333 |
| 11 | 401 |
| 12 | 473 |
| 13 | 553 |
| 14 | 633 |
| 15 | 725 |
| 16 | 821 |
| 17 | 933 |
| 18 | 1041 |
| 19 | 1153 |
| 20 | 1273 |
| 21 | 1405 |
| 22 | 1541 |
| 23 | 1685 |
| 24 | 1829 |
| 25 | 1993 |
| 26 | 2145 |
| 27 | 2313 |
| 28 | 2477 |
| 29 | 2661 |
| 30 | 2845 |
| 31 | 3041 |
| 32 | 3241 |
| 33 | 3433 |
| 34 | 3657 |
| 35 | 3869 |
| 36 | 4085 |
| 37 | 4317 |
| 38 | 4545 |
| 39 | 4809 |
| 40 | 5049 |
| 41 | 5297 |