n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 8 |
6 | 40 |
7 | 211 |
8 | 1406 |
9 | 9754 |
10 | 71591 |
11 | 537699 |
12 | 4131943 |
13 | 32271490 |
14 | 255690412 |
15 | 2050376883 |
16 | 16616721067 |
17 | 135920429975 |
18 | 1120999363012 |
19 | 9313779465810 |
20 | 77897862860818 |
21 | 655433405297407 |
22 | 5544948758579214 |
23 | 47143948331898873 |
24 | 402655164736641843 |
25 | 3453509765971944236 |
26 | 29734988097830504532 |
[1,1,1,3,8,40,211,1406,9754,71591,537699,4131943, 32271490,255690412,2050376883,16616721067, 135920429975,1120999363012,9313779465810, 77897862860818,655433405297407,5544948758579214, 47143948331898873,402655164736641843, 3453509765971944236,29734988097830504532] |