n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 3 |
4 | 8 |
5 | 25 |
6 | 97 |
7 | 434 |
8 | 2095 |
9 | 10707 |
10 | 58194 |
11 | 338195 |
12 | 2097933 |
13 | 13796952 |
14 | 95504749 |
15 | 692462671 |
16 | 5245040408 |
17 | 41436754261 |
18 | 340899165549 |
19 | 2915100624274 |
20 | 25857170687507 |
21 | 237448494222575 |
22 | 2253720620740362 |
23 | 22078799199129799 |
24 | 222987346441156585 |
25 | 2319210969809731600 |
[1,0,1,3,8,25,97,434,2095,10707,58194,338195, 2097933,13796952,95504749,692462671,5245040408, 41436754261,340899165549,2915100624274, 25857170687507,237448494222575,2253720620740362, 22078799199129799,222987346441156585, 2319210969809731600] |