n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 27 |
4 | 118 |
5 | 522 |
6 | 2420 |
7 | 11289 |
8 | 53793 |
9 | 257362 |
10 | 1244961 |
11 | 6039808 |
12 | 29485738 |
13 | 144258235 |
14 | 708480043 |
15 | 3485227388 |
16 | 17187200327 |
17 | 84865641756 |
18 | 419743432518 |
19 | 2078100373296 |
20 | 10300559457528 |
21 | 51096787670550 |
22 | 253687974620399 |
23 | 1260301870804674 |
24 | 6265125287549723 |
25 | 31160154012544656 |
26 | 155054753225871295 |
[1,2,7,27,118,522,2420,11289,53793,257362,1244961, 6039808,29485738,144258235,708480043,3485227388, 17187200327,84865641756,419743432518, 2078100373296,10300559457528,51096787670550, 253687974620399,1260301870804674,6265125287549723, 31160154012544656,155054753225871295] |