n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 3 |
3 | 3 |
4 | 25 |
5 | 58 |
6 | 302 |
7 | 1000 |
8 | 4572 |
9 | 17759 |
10 | 78402 |
11 | 327746 |
12 | 1445868 |
13 | 6280646 |
14 | 27957450 |
15 | 124210073 |
16 | 558853524 |
17 | 2520567027 |
18 | 11454557485 |
19 | 52237087015 |
20 | 239457095960 |
21 | 1101503925205 |
22 | 5086830804442 |
23 | 23565165397859 |
24 | 109513332449237 |
25 | 510337183030398 |
26 | 2384498982840799 |
27 | 11168045680153978 |
28 | 52425419487599722 |
[1,0,3,3,25,58,302,1000,4572,17759,78402,327746, 1445868,6280646,27957450,124210073,558853524, 2520567027,11454557485,52237087015,239457095960, 1101503925205,5086830804442,23565165397859, 109513332449237,510337183030398,2384498982840799, 11168045680153978,52425419487599722] |