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 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 15 |
| 5 | 31 |
| 6 | 62 |
| 7 | 119 |
| 8 | 218 |
| 9 | 381 |
| 10 | 637 |
| 11 | 1023 |
| 12 | 1585 |
| 13 | 2379 |
| 14 | 3472 |
| 15 | 4943 |
| 16 | 6884 |
| 17 | 9401 |
| 18 | 12615 |
| 19 | 16663 |
| 20 | 21699 |
| 21 | 27895 |
| 22 | 35442 |
| 23 | 44551 |
| 24 | 55454 |
| 25 | 68405 |
| 26 | 83681 |
| 27 | 101583 |
| 28 | 122437 |
| 29 | 146595 |
| 30 | 174436 |
| 31 | 206367 |
| 32 | 242824 |
| 33 | 284273 |
| 34 | 331211 |
| 35 | 384167 |
| 36 | 443703 |
| 37 | 510415 |
| 38 | 584934 |
| 39 | 667927 |