n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 21 |
4 | 31 |
5 | 266 |
6 | 672 |
7 | 3484 |
8 | 11375 |
9 | 48768 |
10 | 177023 |
11 | 716418 |
12 | 2730315 |
13 | 10878520 |
14 | 42485638 |
15 | 169181010 |
16 | 670042125 |
17 | 2678678730 |
18 | 10705526976 |
19 | 43007270292 |
20 | 173003915322 |
21 | 698235680844 |
22 | 2822901487191 |
23 | 11439823946306 |
24 | 46438021798875 |
25 | 188856966693230 |
26 | 769224288476860 |
27 | 3137871076604544 |
28 | 12817404260955810 |
[1,0,21,31,266,672,3484,11375,48768,177023,716418, 2730315,10878520,42485638,169181010,670042125, 2678678730,10705526976,43007270292,173003915322, 698235680844,2822901487191,11439823946306, 46438021798875,188856966693230,769224288476860, 3137871076604544,12817404260955810] |