n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 5 |
4 | 15 |
5 | 49 |
6 | 173 |
7 | 639 |
8 | 2469 |
9 | 9997 |
10 | 43109 |
11 | 205092 |
12 | 1153646 |
13 | 8523086 |
14 | 91156133 |
15 | 1446766659 |
16 | 32998508358 |
17 | 1047766596136 |
18 | 45632564217917 |
19 | 2711308588849394 |
20 | 219364550983697100 |
21 | 24151476334929009951 |
22 | 3618445112608409433287 |
[1,2,5,15,49,173,639,2469,9997,43109,205092, 1153646,8523086,91156133,1446766659,32998508358, 1047766596136,45632564217917,2711308588849394, 219364550983697100,24151476334929009951, 3618445112608409433287] |