n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 16 |
5 | 56 |
6 | 218 |
7 | 937 |
8 | 4376 |
9 | 22027 |
10 | 118744 |
11 | 681570 |
12 | 4144988 |
13 | 26598313 |
14 | 179451366 |
15 | 1268930969 |
16 | 9378332608 |
17 | 72267300476 |
18 | 579336907254 |
19 | 4822070246225 |
20 | 41597773001612 |
21 | 371306237988959 |
22 | 3424303740576440 |
23 | 32583334570211654 |
24 | 319487530199710232 |
25 | 3224337031346853361 |
[0,1,2,5,16,56,218,937,4376,22027,118744,681570, 4144988,26598313,179451366,1268930969,9378332608, 72267300476,579336907254,4822070246225, 41597773001612,371306237988959,3424303740576440, 32583334570211654,319487530199710232, 3224337031346853361] |