n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 13 |
4 | 66 |
5 | 330 |
6 | 1624 |
7 | 7973 |
8 | 39173 |
9 | 192539 |
10 | 946375 |
11 | 4651541 |
12 | 22862658 |
13 | 112371609 |
14 | 552314945 |
15 | 2714670141 |
16 | 13342810843 |
17 | 65580931949 |
18 | 322335276473 |
19 | 1584302440665 |
20 | 7786967198052 |
21 | 38273537040452 |
22 | 188117350476413 |
23 | 924611109563490 |
24 | 4544534046237850 |
[1,3,13,66,330,1624,7973,39173,192539,946375, 4651541,22862658,112371609,552314945,2714670141, 13342810843,65580931949,322335276473, 1584302440665,7786967198052,38273537040452, 188117350476413,924611109563490,4544534046237850] |