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 | 211 |
| 2 | 281 |
| 3 | 421 |
| 4 | 461 |
| 5 | 521 |
| 6 | 691 |
| 7 | 881 |
| 8 | 991 |
| 9 | 1031 |
| 10 | 1151 |
| 11 | 1511 |
| 12 | 1601 |
| 13 | 1871 |
| 14 | 1951 |
| 15 | 2221 |
| 16 | 2591 |
| 17 | 3001 |
| 18 | 3251 |
| 19 | 3571 |
| 20 | 3851 |
| 21 | 4021 |
| 22 | 4391 |
| 23 | 4441 |
| 24 | 4481 |
| 25 | 4621 |
| 26 | 4651 |
| 27 | 4691 |
| 28 | 4751 |
| 29 | 4871 |
| 30 | 5081 |
| 31 | 5281 |
| 32 | 5381 |
| 33 | 5531 |
| 34 | 5591 |
| 35 | 5641 |
| 36 | 5801 |
| 37 | 5881 |
| 38 | 6011 |
| 39 | 6101 |
| 40 | 6211 |
| 41 | 6271 |
| 42 | 6491 |
| 43 | 6841 |