n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 9 |
4 | 22 |
5 | 119 |
6 | 300 |
7 | 1651 |
8 | 4172 |
9 | 22989 |
10 | 58102 |
11 | 320189 |
12 | 809250 |
13 | 4459651 |
14 | 11271392 |
15 | 62114919 |
16 | 156990232 |
17 | 865149209 |
18 | 2186591850 |
19 | 12049974001 |
20 | 30455295662 |
21 | 167834486799 |
22 | 424187547412 |
23 | 2337632841179 |
24 | 5908170368100 |
25 | 32559025289701 |
26 | 82290197605982 |
[1,2,9,22,119,300,1651,4172,22989,58102,320189, 809250,4459651,11271392,62114919,156990232, 865149209,2186591850,12049974001,30455295662, 167834486799,424187547412,2337632841179, 5908170368100,32559025289701,82290197605982] |