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 | 151 |
| 2 | 421 |
| 3 | 541 |
| 4 | 991 |
| 5 | 1171 |
| 6 | 1801 |
| 7 | 2851 |
| 8 | 6091 |
| 9 | 11701 |
| 10 | 12301 |
| 11 | 14851 |
| 12 | 16921 |
| 13 | 19891 |
| 14 | 30241 |
| 15 | 34171 |
| 16 | 42751 |
| 17 | 43891 |
| 18 | 52291 |
| 19 | 53551 |
| 20 | 58741 |
| 21 | 62791 |
| 22 | 64171 |
| 23 | 80341 |
| 24 | 81901 |
| 25 | 93241 |
| 26 | 107101 |
| 27 | 121921 |
| 28 | 131671 |
| 29 | 156601 |
| 30 | 163171 |
| 31 | 165391 |
| 32 | 183691 |
| 33 | 193201 |
| 34 | 210421 |
| 35 | 231001 |
| 36 | 233641 |
| 37 | 241651 |
| 38 | 244351 |