n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 10 |
4 | 37 |
5 | 162 |
6 | 674 |
7 | 2871 |
8 | 12132 |
9 | 51436 |
10 | 217811 |
11 | 922780 |
12 | 3908764 |
13 | 16558101 |
14 | 70140734 |
15 | 297121734 |
16 | 1258626537 |
17 | 5331629710 |
18 | 22585142414 |
19 | 95672204155 |
20 | 405273951280 |
21 | 1716768021816 |
22 | 7272346018247 |
23 | 30806152127640 |
24 | 130496954475672 |
25 | 552793970116297 |
26 | 2341672834801754 |
[0,1,2,10,37,162,674,2871,12132,51436,217811, 922780,3908764,16558101,70140734,297121734, 1258626537,5331629710,22585142414,95672204155, 405273951280,1716768021816,7272346018247, 30806152127640,130496954475672,552793970116297, 2341672834801754] |