n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 30 |
6 | 92 |
7 | 308 |
8 | 1063 |
9 | 3780 |
10 | 13953 |
11 | 52464 |
12 | 201883 |
13 | 791572 |
14 | 3147547 |
15 | 12702666 |
16 | 51861591 |
17 | 213937957 |
18 | 891232927 |
19 | 3743220743 |
20 | 15841828369 |
21 | 67512847684 |
22 | 289488115049 |
23 | 1248410486220 |
24 | 5411866349876 |
25 | 23571957134751 |
26 | 103123866691859 |
27 | 452984148808815 |
28 | 1997259430689696 |
29 | 8836941466654388 |
[1,1,2,4,10,30,92,308,1063,3780,13953,52464, 201883,791572,3147547,12702666,51861591,213937957, 891232927,3743220743,15841828369,67512847684, 289488115049,1248410486220,5411866349876, 23571957134751,103123866691859,452984148808815, 1997259430689696,8836941466654388] |