n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 3 |
6 | 13 |
7 | 35 |
8 | 157 |
9 | 741 |
10 | 4435 |
11 | 44453 |
12 | 490313 |
13 | 6256041 |
14 | 104651895 |
15 | 2130039209 |
16 | 56493398929 |
17 | 1931237117101 |
18 | 81069750246845 |
19 | 4246906418006015 |
20 | 279802247495802441 |
[1,1,1,1,3,13,35,157,741,4435,44453,490313, 6256041,104651895,2130039209,56493398929, 1931237117101,81069750246845,4246906418006015, 279802247495802441] |