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) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 0 |
| 18 | 8 |
| 19 | 24 |
| 20 | 80 |
| 21 | 206 |
| 22 | 504 |
| 23 | 1004 |
| 24 | 1910 |
| 25 | 3380 |
| 26 | 5688 |
| 27 | 9036 |
| 28 | 14106 |
| 29 | 21190 |
| 30 | 31158 |
| 31 | 44370 |
| 32 | 62206 |
| 33 | 85308 |
| 34 | 115662 |
| 35 | 153746 |
| 36 | 202146 |
| 37 | 262156 |
| 38 | 336960 |
| 39 | 427488 |
| 40 | 538690 |
| 41 | 671604 |
| 42 | 831926 |
| 43 | 1021238 |
| 44 | 1246604 |
| 45 | 1510056 |
| 46 | 1820580 |
| 47 | 2179480 |