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) |
---|---|
20 | 12600 |
21 | 78120 |
22 | 189000 |
23 | 549000 |
24 | 1389960 |
25 | 2858640 |
26 | 6471699 |
27 | 15289662 |
28 | 29639082 |
29 | 64025820 |
30 | 134997382 |
31 | 267550925 |
32 | 545274648 |
33 | 1161661901 |
34 | 2223888268 |
35 | 4552401195 |
36 | 9185643748 |
37 | 17829746962 |
38 | 35102264675 |
39 | 71613947350 |
40 | 135793314152 |
41 | 270167493481 |
42 | 534784841445 |