n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 3 |
4 | 5 |
5 | 16 |
6 | 39 |
7 | 105 |
8 | 272 |
9 | 715 |
10 | 1869 |
11 | 4896 |
12 | 12815 |
13 | 33553 |
14 | 87840 |
15 | 229971 |
16 | 602069 |
17 | 1576240 |
18 | 4126647 |
19 | 10803705 |
20 | 28284464 |
21 | 74049691 |
22 | 193864605 |
23 | 507544128 |
24 | 1328767775 |
25 | 3478759201 |
26 | 9107509824 |
27 | 23843770275 |
28 | 62423800997 |
29 | 163427632720 |
30 | 427859097159 |
31 | 1120149658761 |
[1,0,3,5,16,39,105,272,715,1869,4896,12815,33553, 87840,229971,602069,1576240,4126647,10803705, 28284464,74049691,193864605,507544128,1328767775, 3478759201,9107509824,23843770275,62423800997, 163427632720,427859097159,1120149658761] |