n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 4 |
5 | 10 |
6 | 25 |
7 | 69 |
8 | 192 |
9 | 562 |
10 | 1663 |
11 | 5065 |
12 | 15592 |
13 | 48874 |
14 | 154651 |
15 | 495418 |
16 | 1599816 |
17 | 5212650 |
18 | 17098590 |
19 | 56473664 |
20 | 187572584 |
21 | 626430568 |
22 | 2101977231 |
23 | 7084963950 |
24 | 23976649328 |
25 | 81447876258 |
26 | 277627821135 |
27 | 949393445553 |
28 | 3256266981128 |
29 | 11199653726786 |
30 | 38620292110925 |
[1,1,1,2,4,10,25,69,192,562,1663,5065,15592,48874, 154651,495418,1599816,5212650,17098590,56473664, 187572584,626430568,2101977231,7084963950, 23976649328,81447876258,277627821135,949393445553, 3256266981128,11199653726786,38620292110925] |