n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 9 |
5 | 68 |
6 | 517 |
7 | 4163 |
8 | 36180 |
9 | 341733 |
10 | 3512825 |
11 | 39238230 |
12 | 474788003 |
13 | 6199376363 |
14 | 86987391878 |
15 | 1306291409455 |
16 | 20912309745853 |
17 | 355604563226196 |
18 | 6401691628921841 |
19 | 121639267666626943 |
20 | 2432850284018404628 |
21 | 51090467301893283249 |
22 | 1123996221061869232677 |
[0,0,0,1,9,68,517,4163,36180,341733,3512825, 39238230,474788003,6199376363,86987391878, 1306291409455,20912309745853,355604563226196, 6401691628921841,121639267666626943, 2432850284018404628,51090467301893283249, 1123996221061869232677] |