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 | 6 |
| 3 | 11 |
| 4 | 20 |
| 5 | 36 |
| 6 | 63 |
| 7 | 106 |
| 8 | 171 |
| 9 | 265 |
| 10 | 396 |
| 11 | 573 |
| 12 | 806 |
| 13 | 1106 |
| 14 | 1485 |
| 15 | 1956 |
| 16 | 2533 |
| 17 | 3231 |
| 18 | 4066 |
| 19 | 5055 |
| 20 | 6216 |
| 21 | 7568 |
| 22 | 9131 |
| 23 | 10926 |
| 24 | 12975 |
| 25 | 15301 |
| 26 | 17928 |
| 27 | 20881 |
| 28 | 24186 |
| 29 | 27870 |
| 30 | 31961 |
| 31 | 36488 |
| 32 | 41481 |
| 33 | 46971 |
| 34 | 52990 |
| 35 | 59571 |
| 36 | 66748 |
| 37 | 74556 |
| 38 | 83031 |
| 39 | 92210 |
| 40 | 102131 |
| 41 | 112833 |
| 42 | 124356 |