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 | 181 |
| 2 | 1621 |
| 3 | 6481 |
| 4 | 8821 |
| 5 | 35281 |
| 6 | 52021 |
| 7 | 58321 |
| 8 | 87121 |
| 9 | 103681 |
| 10 | 112501 |
| 11 | 131221 |
| 12 | 141121 |
| 13 | 151381 |
| 14 | 172981 |
| 15 | 184321 |
| 16 | 302581 |
| 17 | 380881 |
| 18 | 414721 |
| 19 | 450001 |
| 20 | 486721 |
| 21 | 544501 |
| 22 | 626581 |
| 23 | 691921 |
| 24 | 737281 |
| 25 | 784081 |
| 26 | 808021 |
| 27 | 1039681 |
| 28 | 1067221 |
| 29 | 1240021 |
| 30 | 1300501 |
| 31 | 1362421 |