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) |
|---|---|
| 2 | 4 |
| 3 | 6 |
| 4 | 10 |
| 5 | 15 |
| 6 | 25 |
| 7 | 35 |
| 8 | 55 |
| 9 | 77 |
| 10 | 121 |
| 11 | 143 |
| 12 | 187 |
| 13 | 221 |
| 14 | 289 |
| 15 | 323 |
| 16 | 391 |
| 17 | 493 |
| 18 | 551 |
| 19 | 667 |
| 20 | 841 |
| 21 | 899 |
| 22 | 1073 |
| 23 | 1189 |
| 24 | 1369 |
| 25 | 1517 |
| 26 | 1681 |
| 27 | 1763 |
| 28 | 1961 |
| 29 | 2183 |
| 30 | 2419 |
| 31 | 2537 |
| 32 | 2809 |
| 33 | 3127 |
| 34 | 3481 |
| 35 | 3599 |
| 36 | 3953 |
| 37 | 4189 |
| 38 | 4489 |
| 39 | 4757 |
| 40 | 5041 |
| 41 | 5293 |
| 42 | 5723 |
| 43 | 5963 |
| 44 | 6499 |
| 45 | 6887 |
| 46 | 7171 |
| 47 | 7663 |
| 48 | 8051 |
| 49 | 8633 |