n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 1 |
4 | 4 |
5 | 18 |
6 | 93 |
7 | 579 |
8 | 4165 |
9 | 34031 |
10 | 311528 |
11 | 3158978 |
12 | 35154907 |
13 | 426029455 |
14 | 5585287179 |
15 | 78767551059 |
16 | 1189090451364 |
17 | 19133023344034 |
18 | 326894939779865 |
19 | 5910529926220115 |
20 | 112753567098061553 |
21 | 2263304875358959543 |
22 | 47687055915645538384 |
23 | 1052290471481700378570 |
[0,0,1,1,4,18,93,579,4165,34031,311528,3158978, 35154907,426029455,5585287179,78767551059, 1189090451364,19133023344034,326894939779865, 5910529926220115,112753567098061553, 2263304875358959543,47687055915645538384, 1052290471481700378570] |