n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 19 |
4 | 55 |
5 | 433 |
6 | 1801 |
7 | 10963 |
8 | 52543 |
9 | 291457 |
10 | 1476145 |
11 | 7907059 |
12 | 40908583 |
13 | 216237169 |
14 | 1127920249 |
15 | 5931872371 |
16 | 31038388975 |
17 | 162918608257 |
18 | 853489829089 |
19 | 4476595998547 |
20 | 23462519091607 |
21 | 123027170158513 |
22 | 644917164874345 |
23 | 3381296222443411 |
24 | 17726184247750687 |
[1,1,19,55,433,1801,10963,52543,291457,1476145, 7907059,40908583,216237169,1127920249,5931872371, 31038388975,162918608257,853489829089, 4476595998547,23462519091607,123027170158513, 644917164874345,3381296222443411, 17726184247750687] |