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 | 3 |
| 2 | 7 |
| 3 | 19 |
| 4 | 41 |
| 5 | 73 |
| 6 | 113 |
| 7 | 191 |
| 8 | 271 |
| 9 | 383 |
| 10 | 509 |
| 11 | 661 |
| 12 | 859 |
| 13 | 1069 |
| 14 | 1307 |
| 15 | 1601 |
| 16 | 1931 |
| 17 | 2287 |
| 18 | 2687 |
| 19 | 3119 |
| 20 | 3583 |
| 21 | 4093 |
| 22 | 4657 |
| 23 | 5279 |
| 24 | 5881 |
| 25 | 6607 |
| 26 | 7351 |
| 27 | 8167 |
| 28 | 9001 |
| 29 | 9851 |
| 30 | 10837 |
| 31 | 11867 |
| 32 | 12899 |
| 33 | 13967 |
| 34 | 15161 |
| 35 | 16361 |
| 36 | 17627 |
| 37 | 19031 |
| 38 | 20389 |
| 39 | 21821 |
| 40 | 23297 |
| 41 | 24917 |
| 42 | 26557 |
| 43 | 28279 |
| 44 | 30059 |
| 45 | 31891 |
| 46 | 33647 |
| 47 | 35617 |
| 48 | 37607 |
| 49 | 39779 |