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 | 61 |
| 2 | 421 |
| 3 | 1321 |
| 4 | 3061 |
| 5 | 4201 |
| 6 | 4621 |
| 7 | 5521 |
| 8 | 7561 |
| 9 | 12601 |
| 10 | 14821 |
| 11 | 15601 |
| 12 | 18061 |
| 13 | 19801 |
| 14 | 28621 |
| 15 | 35401 |
| 16 | 42901 |
| 17 | 44221 |
| 18 | 52561 |
| 19 | 55501 |
| 20 | 74821 |
| 21 | 76561 |
| 22 | 81901 |
| 23 | 87421 |
| 24 | 97021 |
| 25 | 109201 |
| 26 | 111301 |
| 27 | 115561 |
| 28 | 117721 |
| 29 | 131101 |
| 30 | 135721 |
| 31 | 150061 |
| 32 | 189061 |
| 33 | 217561 |
| 34 | 235621 |
| 35 | 251221 |
| 36 | 270601 |
| 37 | 273901 |