n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 5 |
3 | 29 |
4 | 203 |
5 | 1680 |
6 | 16058 |
7 | 173865 |
8 | 2099957 |
9 | 27952999 |
10 | 406125305 |
11 | 6389713034 |
12 | 108157272720 |
13 | 1958821525361 |
14 | 37779732341077 |
15 | 772829270394685 |
16 | 16708083353842267 |
17 | 380563529091632760 |
18 | 9106983116342966818 |
19 | 228393730451588322201 |
20 | 5989333028770423686565 |
[0,1,5,29,203,1680,16058,173865,2099957,27952999, 406125305,6389713034,108157272720,1958821525361, 37779732341077,772829270394685,16708083353842267, 380563529091632760,9106983116342966818, 228393730451588322201,5989333028770423686565] |