n | a(n) |
---|---|
1 | 0 |
2 | 6 |
3 | 21 |
4 | 110 |
5 | 1045 |
6 | 7322 |
7 | 60497 |
8 | 482261 |
9 | 3886764 |
10 | 31419679 |
11 | 253669718 |
12 | 2050750767 |
13 | 16574522884 |
14 | 133980763315 |
15 | 1083047418757 |
16 | 8754987461582 |
17 | 70773060189635 |
18 | 572110944739376 |
19 | 4624804772439213 |
20 | 37385796035240692 |
21 | 302217747405919419 |
[0,6,21,110,1045,7322,60497,482261,3886764, 31419679,253669718,2050750767,16574522884, 133980763315,1083047418757,8754987461582, 70773060189635,572110944739376,4624804772439213, 37385796035240692,302217747405919419] |