n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 3 |
5 | 10 |
6 | 37 |
7 | 161 |
8 | 878 |
9 | 5605 |
10 | 41912 |
11 | 355558 |
12 | 3359250 |
13 | 34723752 |
14 | 388248880 |
15 | 4655392910 |
16 | 59493136018 |
17 | 806368182523 |
18 | 11546555440892 |
19 | 174096392201350 |
20 | 2756178999408121 |
21 | 45700016438834847 |
22 | 791855740761714317 |
23 | 14309459324411915139 |
24 | 269188219981362999139 |
[0,0,1,3,10,37,161,878,5605,41912,355558,3359250, 34723752,388248880,4655392910,59493136018, 806368182523,11546555440892,174096392201350, 2756178999408121,45700016438834847, 791855740761714317,14309459324411915139, 269188219981362999139] |