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 | 41 |
| 4 | 181 |
| 5 | 211 |
| 6 | 241 |
| 7 | 281 |
| 8 | 421 |
| 9 | 811 |
| 10 | 821 |
| 11 | 881 |
| 12 | 1181 |
| 13 | 1481 |
| 14 | 1811 |
| 15 | 2111 |
| 16 | 2141 |
| 17 | 2221 |
| 18 | 2281 |
| 19 | 2411 |
| 20 | 2441 |
| 21 | 4111 |
| 22 | 4211 |
| 23 | 4241 |
| 24 | 4421 |
| 25 | 4441 |
| 26 | 4481 |
| 27 | 8111 |
| 28 | 8221 |
| 29 | 8821 |
| 30 | 11411 |
| 31 | 11821 |
| 32 | 12211 |
| 33 | 12241 |
| 34 | 12281 |
| 35 | 12421 |
| 36 | 12821 |
| 37 | 12841 |
| 38 | 14221 |
| 39 | 14281 |
| 40 | 14411 |
| 41 | 14821 |
| 42 | 18121 |
| 43 | 18181 |
| 44 | 18211 |