n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 30 |
4 | 145 |
5 | 680 |
6 | 3151 |
7 | 14394 |
8 | 65217 |
9 | 293223 |
10 | 1310255 |
11 | 5820697 |
12 | 25725139 |
13 | 113161286 |
14 | 495659656 |
15 | 2162471602 |
16 | 9399682398 |
17 | 40716499477 |
18 | 175798072996 |
19 | 756709512011 |
20 | 3247830724594 |
21 | 13901967775738 |
22 | 59352638426839 |
23 | 252778786749676 |
24 | 1074061758972744 |
25 | 4553583433874616 |
26 | 19264461634793094 |
[1,1,6,30,145,680,3151,14394,65217,293223,1310255, 5820697,25725139,113161286,495659656,2162471602, 9399682398,40716499477,175798072996,756709512011, 3247830724594,13901967775738,59352638426839, 252778786749676,1074061758972744,4553583433874616, 19264461634793094] |