n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 10 |
5 | 37 |
6 | 147 |
7 | 610 |
8 | 2616 |
9 | 11500 |
10 | 51546 |
11 | 234689 |
12 | 1082393 |
13 | 5046167 |
14 | 23742030 |
15 | 112589232 |
16 | 537589895 |
17 | 2582351997 |
18 | 12470621690 |
19 | 60508557435 |
20 | 294841397025 |
21 | 1442186809360 |
22 | 7078805571555 |
23 | 34855302159030 |
[0,1,1,3,10,37,147,610,2616,11500,51546,234689, 1082393,5046167,23742030,112589232,537589895, 2582351997,12470621690,60508557435,294841397025, 1442186809360,7078805571555,34855302159030] |