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 | 2 |
| 2 | 11 |
| 3 | 131 |
| 4 | 251 |
| 5 | 491 |
| 6 | 599 |
| 7 | 1439 |
| 8 | 3371 |
| 9 | 5639 |
| 10 | 5879 |
| 11 | 6971 |
| 12 | 7079 |
| 13 | 8039 |
| 14 | 8291 |
| 15 | 9839 |
| 16 | 10799 |
| 17 | 11171 |
| 18 | 12119 |
| 19 | 14879 |
| 20 | 16931 |
| 21 | 17159 |
| 22 | 18839 |
| 23 | 23039 |
| 24 | 23159 |
| 25 | 25919 |
| 26 | 50291 |
| 27 | 53411 |
| 28 | 53639 |
| 29 | 59051 |
| 30 | 69371 |
| 31 | 74771 |
| 32 | 74891 |
| 33 | 75239 |
| 34 | 81119 |
| 35 | 81359 |
| 36 | 117839 |
| 37 | 119039 |
| 38 | 126839 |
| 39 | 130811 |
| 40 | 131771 |