n | a(n) |
---|---|
1 | 21 |
2 | 185 |
3 | 56 |
4 | 206 |
5 | 603 |
6 | 1247 |
7 | 2853 |
8 | 6870 |
9 | 15489 |
10 | 35924 |
11 | 84962 |
12 | 195967 |
13 | 453837 |
14 | 1061993 |
15 | 2464882 |
16 | 5719363 |
17 | 13329296 |
18 | 30988342 |
19 | 71989905 |
20 | 167525699 |
21 | 389592291 |
22 | 905597726 |
23 | 2106327411 |
24 | 4898465680 |
25 | 11389209332 |
26 | 26486000403 |
27 | 61593726193 |
[21,185,56,206,603,1247,2853,6870,15489,35924, 84962,195967,453837,1061993,2464882,5719363, 13329296,30988342,71989905,167525699,389592291, 905597726,2106327411,4898465680,11389209332, 26486000403,61593726193] |