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 | 3 |
| 1 | 7 |
| 2 | 13 |
| 3 | 23 |
| 4 | 43 |
| 5 | 67 |
| 6 | 97 |
| 7 | 125 |
| 8 | 127 |
| 9 | 179 |
| 10 | 181 |
| 11 | 237 |
| 12 | 339 |
| 13 | 403 |
| 14 | 453 |
| 15 | 729 |
| 16 | 757 |
| 17 | 879 |
| 18 | 1109 |
| 19 | 1399 |
| 20 | 2199 |
| 21 | 2653 |
| 22 | 4491 |
| 23 | 5335 |
| 24 | 6231 |
| 25 | 7461 |
| 26 | 8933 |
| 27 | 12093 |
| 28 | 12613 |
| 29 | 14409 |
| 30 | 14687 |
| 31 | 18183 |
| 32 | 18917 |
| 33 | 23591 |
| 34 | 25131 |
| 35 | 27933 |
| 36 | 29199 |
| 37 | 32877 |
| 38 | 36233 |
| 39 | 36639 |
| 40 | 36949 |
| 41 | 49193 |
| 42 | 50745 |