n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 3 |
7 | 9 |
8 | 19 |
9 | 37 |
10 | 115 |
11 | 481 |
12 | 2395 |
13 | 10969 |
14 | 57003 |
15 | 371055 |
16 | 2992969 |
17 | 26653005 |
18 | 266091447 |
19 | 3019768963 |
20 | 42043911685 |
21 | 666291390951 |
22 | 12240477419651 |
23 | 251570549673017 |
24 | 6156133419360705 |
25 | 172490682719945137 |
[1,1,1,1,1,3,9,19,37,115,481,2395,10969,57003, 371055,2992969,26653005,266091447,3019768963, 42043911685,666291390951,12240477419651, 251570549673017,6156133419360705, 172490682719945137] |