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 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 4 |
| 5 | 12 |
| 6 | 27 |
| 7 | 57 |
| 8 | 107 |
| 9 | 192 |
| 10 | 327 |
| 11 | 538 |
| 12 | 855 |
| 13 | 1329 |
| 14 | 2018 |
| 15 | 3003 |
| 16 | 4402 |
| 17 | 6349 |
| 18 | 9045 |
| 19 | 12720 |
| 20 | 17713 |
| 21 | 24395 |
| 22 | 33335 |
| 23 | 45118 |
| 24 | 60655 |
| 25 | 80888 |
| 26 | 107242 |
| 27 | 141177 |
| 28 | 184905 |
| 29 | 240679 |
| 30 | 311850 |
| 31 | 401860 |
| 32 | 515725 |
| 33 | 658630 |
| 34 | 838006 |
| 35 | 1061561 |
| 36 | 1340193 |
| 37 | 1685271 |
| 38 | 2112576 |
| 39 | 2638727 |