n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 2 |
4 | 7 |
5 | 9 |
6 | 29 |
7 | 47 |
8 | 144 |
9 | 264 |
10 | 747 |
11 | 1531 |
12 | 4147 |
13 | 9063 |
14 | 23744 |
15 | 54522 |
16 | 140223 |
17 | 332033 |
18 | 845111 |
19 | 2045007 |
20 | 5176880 |
21 | 12713772 |
22 | 32115727 |
23 | 79676437 |
24 | 201227865 |
25 | 502852973 |
[1,1,2,2,7,9,29,47,144,264,747,1531,4147,9063, 23744,54522,140223,332033,845111,2045007,5176880, 12713772,32115727,79676437,201227865,502852973] |