n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 3 |
4 | 28 |
5 | 62 |
6 | 571 |
7 | 1555 |
8 | 2012 |
9 | 2529 |
10 | 2759 |
11 | 3018 |
12 | 4158 |
13 | 4740 |
14 | 6819 |
15 | 10564 |
16 | 11665 |
17 | 32858 |
18 | 139892 |
19 | 392129 |
20 | 707969 |
21 | 1049721 |
22 | 2081164 |
23 | 14990403 |
24 | 36112275 |
25 | 39552834 |
26 | 42710786 |
27 | 199618805 |
[0,1,3,28,62,571,1555,2012,2529,2759,3018,4158, 4740,6819,10564,11665,32858,139892,392129,707969, 1049721,2081164,14990403,36112275,39552834, 42710786,199618805] |