n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 10 |
4 | 37 |
5 | 121 |
6 | 451 |
7 | 1639 |
8 | 6259 |
9 | 23923 |
10 | 93502 |
11 | 367852 |
12 | 1465003 |
13 | 5874103 |
14 | 23740276 |
15 | 96503554 |
16 | 394542379 |
17 | 1620716251 |
18 | 6687296308 |
19 | 27700303510 |
20 | 115152607831 |
21 | 480244735171 |
22 | 2008802728819 |
23 | 8425318166635 |
24 | 35425680021397 |
25 | 149296062114181 |
26 | 630526903497706 |
27 | 2668194946794124 |
28 | 11311786743536125 |
[1,1,4,10,37,121,451,1639,6259,23923,93502,367852, 1465003,5874103,23740276,96503554,394542379, 1620716251,6687296308,27700303510,115152607831, 480244735171,2008802728819,8425318166635, 35425680021397,149296062114181,630526903497706, 2668194946794124,11311786743536125] |