n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 4 |
5 | 10 |
6 | 22 |
7 | 115 |
8 | 319 |
9 | 736 |
10 | 3886 |
11 | 10816 |
12 | 24991 |
13 | 131989 |
14 | 367405 |
15 | 848947 |
16 | 4483720 |
17 | 12480934 |
18 | 28839196 |
19 | 152314471 |
20 | 423984331 |
21 | 979683706 |
22 | 5174208274 |
23 | 14402986300 |
24 | 33280406797 |
25 | 175770766825 |
26 | 489277549849 |
27 | 1130554147381 |
28 | 5971031863756 |
29 | 16621033708546 |
[1,1,1,1,4,10,22,115,319,736,3886,10816,24991, 131989,367405,848947,4483720,12480934,28839196, 152314471,423984331,979683706,5174208274, 14402986300,33280406797,175770766825,489277549849, 1130554147381,5971031863756,16621033708546] |