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) |
|---|---|
| 0 | -1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 17 |
| 4 | 31 |
| 5 | 49 |
| 6 | 71 |
| 7 | 97 |
| 8 | 127 |
| 9 | 161 |
| 10 | 199 |
| 11 | 241 |
| 12 | 287 |
| 13 | 337 |
| 14 | 391 |
| 15 | 449 |
| 16 | 511 |
| 17 | 577 |
| 18 | 647 |
| 19 | 721 |
| 20 | 799 |
| 21 | 881 |
| 22 | 967 |
| 23 | 1057 |
| 24 | 1151 |
| 25 | 1249 |
| 26 | 1351 |
| 27 | 1457 |
| 28 | 1567 |
| 29 | 1681 |
| 30 | 1799 |
| 31 | 1921 |
| 32 | 2047 |
| 33 | 2177 |
| 34 | 2311 |
| 35 | 2449 |
| 36 | 2591 |
| 37 | 2737 |
| 38 | 2887 |
| 39 | 3041 |
| 40 | 3199 |
| 41 | 3361 |
| 42 | 3527 |
| 43 | 3697 |
| 44 | 3871 |
| 45 | 4049 |
| 46 | 4231 |
| 47 | 4417 |
| 48 | 4607 |
| 49 | 4801 |