n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 9 |
3 | 73 |
4 | 585 |
5 | 4681 |
6 | 37449 |
7 | 299593 |
8 | 2396745 |
9 | 19173961 |
10 | 153391689 |
11 | 1227133513 |
12 | 9817068105 |
13 | 78536544841 |
14 | 628292358729 |
15 | 5026338869833 |
16 | 40210710958665 |
17 | 321685687669321 |
18 | 2573485501354569 |
19 | 20587884010836553 |
20 | 164703072086692425 |
[0,1,9,73,585,4681,37449,299593,2396745,19173961, 153391689,1227133513,9817068105,78536544841, 628292358729,5026338869833,40210710958665, 321685687669321,2573485501354569, 20587884010836553,164703072086692425] |