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) |
---|---|
13 | 1 |
14 | 14 |
15 | 105 |
16 | 560 |
17 | 2380 |
18 | 8568 |
19 | 27132 |
20 | 77520 |
21 | 203490 |
22 | 497420 |
23 | 1144066 |
24 | 2496144 |
25 | 5200300 |
26 | 10400600 |
27 | 20058300 |
28 | 37442160 |
29 | 67863915 |
30 | 119759850 |
31 | 206253075 |
32 | 347373600 |
33 | 573166440 |
34 | 927983760 |
35 | 1476337800 |
36 | 2310789600 |
37 | 3562467300 |
38 | 5414950296 |
39 | 8122425444 |
40 | 12033222880 |