n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 14 |
3 | 40 |
4 | 155 |
5 | 596 |
6 | 2954 |
7 | 14784 |
8 | 83955 |
9 | 494060 |
10 | 3112246 |
11 | 20505484 |
12 | 141656697 |
13 | 1020670280 |
14 | 7650120170 |
15 | 59509447736 |
16 | 479350116043 |
17 | 3990968968884 |
18 | 34287091686110 |
19 | 303500118414180 |
20 | 2764254404207136 |
21 | 25873492982703592 |
22 | 248602031383697602 |
23 | 2449525056696683760 |
24 | 24727324378709830225 |
25 | 255512480002690958696 |
26 | 2700450457984818382502 |
27 | 29169124796849950540212 |
28 | 321787888546754475501470 |
29 | 3623188502069809345093500 |
[1,4,14,40,155,596,2954,14784,83955,494060, 3112246,20505484,141656697,1020670280,7650120170, 59509447736,479350116043,3990968968884, 34287091686110,303500118414180,2764254404207136, 25873492982703592,248602031383697602, 2449525056696683760,24727324378709830225, 255512480002690958696,2700450457984818382502, 29169124796849950540212,321787888546754475501470, 3623188502069809345093500] |