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 | 5 |
| 3 | 10 |
| 4 | 20 |
| 5 | 33 |
| 6 | 49 |
| 7 | 75 |
| 8 | 104 |
| 9 | 147 |
| 10 | 193 |
| 11 | 257 |
| 12 | 324 |
| 13 | 413 |
| 14 | 505 |
| 15 | 623 |
| 16 | 744 |
| 17 | 895 |
| 18 | 1049 |
| 19 | 1237 |
| 20 | 1428 |
| 21 | 1657 |
| 22 | 1889 |
| 23 | 2163 |
| 24 | 2440 |
| 25 | 2763 |
| 26 | 3089 |
| 27 | 3465 |
| 28 | 3844 |
| 29 | 4277 |
| 30 | 4713 |
| 31 | 5207 |
| 32 | 5704 |
| 33 | 6263 |
| 34 | 6825 |
| 35 | 7453 |
| 36 | 8084 |
| 37 | 8785 |
| 38 | 9489 |
| 39 | 10267 |
| 40 | 11048 |
| 41 | 11907 |
| 42 | 12769 |
| 43 | 13713 |
| 44 | 14660 |
| 45 | 15693 |
| 46 | 16729 |
| 47 | 17855 |