n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 1 |
6 | 9 |
7 | 26 |
8 | 299 |
9 | 1183 |
10 | 10701 |
11 | 24736 |
12 | 349241 |
13 | 626053 |
14 | 6680979 |
15 | 26364610 |
16 | 137247254 |
17 | 353304459 |
18 | 4826418027 |
19 | 8199440662 |
20 | 93679529503 |
21 | 315943737331 |
22 | 1913783074461 |
23 | 4382586624256 |
24 | 60629067776483 |
[0,0,0,0,1,9,26,299,1183,10701,24736,349241, 626053,6680979,26364610,137247254,353304459, 4826418027,8199440662,93679529503,315943737331, 1913783074461,4382586624256,60629067776483] |