n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 1 |
6 | 5 |
7 | 19 |
8 | 76 |
9 | 360 |
10 | 1792 |
11 | 9634 |
12 | 55286 |
13 | 336396 |
14 | 2162554 |
15 | 14629720 |
16 | 103818489 |
17 | 770678553 |
18 | 5969822993 |
19 | 48148947503 |
20 | 403545713463 |
21 | 3508356996105 |
22 | 31587389832791 |
23 | 294087418038113 |
24 | 2827471212909189 |
25 | 28037001032306431 |
26 | 286398141349873925 |
27 | 3010540174760962975 |
[1,1,0,0,1,1,5,19,76,360,1792,9634,55286,336396, 2162554,14629720,103818489,770678553,5969822993, 48148947503,403545713463,3508356996105, 31587389832791,294087418038113,2827471212909189, 28037001032306431,286398141349873925, 3010540174760962975] |