n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 15 |
4 | 69 |
5 | 376 |
6 | 1741 |
7 | 8860 |
8 | 46044 |
9 | 245074 |
10 | 1336538 |
11 | 7337135 |
12 | 40736876 |
13 | 228625148 |
14 | 1293530435 |
15 | 7372491383 |
16 | 42275811853 |
17 | 243742895280 |
18 | 1412310750812 |
19 | 8219298313118 |
20 | 48023377286364 |
21 | 281592177442072 |
22 | 1656522460985914 |
23 | 9773791391488278 |
24 | 57824226906859849 |
[1,1,6,15,69,376,1741,8860,46044,245074,1336538, 7337135,40736876,228625148,1293530435,7372491383, 42275811853,243742895280,1412310750812, 8219298313118,48023377286364,281592177442072, 1656522460985914,9773791391488278, 57824226906859849] |