n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 13 |
4 | 73 |
5 | 381 |
6 | 2611 |
7 | 19993 |
8 | 165873 |
9 | 1436473 |
10 | 14004451 |
11 | 145099461 |
12 | 1584090553 |
13 | 18196817653 |
14 | 223416271443 |
15 | 2865429498961 |
16 | 38330181602401 |
17 | 535448870264433 |
18 | 7823019065848003 |
19 | 118402856414023933 |
20 | 1856454825152993961 |
21 | 30160691907215561581 |
[1,1,3,13,73,381,2611,19993,165873,1436473, 14004451,145099461,1584090553,18196817653, 223416271443,2865429498961,38330181602401, 535448870264433,7823019065848003, 118402856414023933,1856454825152993961, 30160691907215561581] |