n | a(n) |
---|---|
1 | 1 |
2 | 8 |
3 | 23 |
4 | 103 |
5 | 520 |
6 | 2671 |
7 | 13876 |
8 | 72399 |
9 | 378321 |
10 | 1979531 |
11 | 10361881 |
12 | 54254622 |
13 | 284118654 |
14 | 1487964150 |
15 | 7792975441 |
16 | 40815315514 |
17 | 213770499606 |
18 | 1119631248273 |
19 | 5864130051553 |
20 | 30713754006040 |
21 | 160865382297683 |
22 | 842543809330756 |
[1,8,23,103,520,2671,13876,72399,378321,1979531, 10361881,54254622,284118654,1487964150,7792975441, 40815315514,213770499606,1119631248273, 5864130051553,30713754006040,160865382297683, 842543809330756] |