n | a(n) |
---|---|
2 | 1 |
3 | 1 |
4 | 4 |
5 | 22 |
6 | 144 |
7 | 1064 |
8 | 8623 |
9 | 75267 |
10 | 698898 |
11 | 6843478 |
12 | 70209485 |
13 | 751028445 |
14 | 8344927123 |
15 | 96028777007 |
16 | 1141700185040 |
17 | 13996586957076 |
18 | 176645358631455 |
19 | 2291885063335367 |
20 | 30533724487796062 |
21 | 417268607544901628 |
22 | 5843943369536347505 |
23 | 83810410526002091163 |
24 | 1229907906811449747716 |
[1,1,4,22,144,1064,8623,75267,698898,6843478, 70209485,751028445,8344927123,96028777007, 1141700185040,13996586957076,176645358631455, 2291885063335367,30533724487796062, 417268607544901628,5843943369536347505, 83810410526002091163,1229907906811449747716] |