n | a(n) |
---|---|
1 | 1 |
2 | 7 |
3 | 40 |
4 | 217 |
5 | 1158 |
6 | 6150 |
7 | 32656 |
8 | 173719 |
9 | 926664 |
10 | 4958556 |
11 | 26619438 |
12 | 143365880 |
13 | 774562478 |
14 | 4197344582 |
15 | 22810572062 |
16 | 124300860689 |
17 | 679081142350 |
18 | 3718894341450 |
19 | 20412141531664 |
20 | 112276061739814 |
21 | 618806031336236 |
22 | 3416954495002676 |
[1,7,40,217,1158,6150,32656,173719,926664,4958556, 26619438,143365880,774562478,4197344582, 22810572062,124300860689,679081142350, 3718894341450,20412141531664,112276061739814, 618806031336236,3416954495002676] |