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 | 3 |
| 2 | 9 |
| 3 | 19 |
| 4 | 33 |
| 5 | 51 |
| 6 | 73 |
| 7 | 99 |
| 8 | 129 |
| 9 | 163 |
| 10 | 201 |
| 11 | 243 |
| 12 | 289 |
| 13 | 339 |
| 14 | 393 |
| 15 | 451 |
| 16 | 513 |
| 17 | 579 |
| 18 | 649 |
| 19 | 723 |
| 20 | 801 |
| 21 | 883 |
| 22 | 969 |
| 23 | 1059 |
| 24 | 1153 |
| 25 | 1251 |
| 26 | 1353 |
| 27 | 1459 |
| 28 | 1569 |
| 29 | 1683 |
| 30 | 1801 |
| 31 | 1923 |
| 32 | 2049 |
| 33 | 2179 |
| 34 | 2313 |
| 35 | 2451 |
| 36 | 2593 |
| 37 | 2739 |
| 38 | 2889 |
| 39 | 3043 |
| 40 | 3201 |
| 41 | 3363 |
| 42 | 3529 |
| 43 | 3699 |
| 44 | 3873 |
| 45 | 4051 |