n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 14 |
5 | 31 |
6 | 73 |
7 | 172 |
8 | 400 |
9 | 932 |
10 | 2177 |
11 | 5081 |
12 | 11854 |
13 | 27662 |
14 | 64554 |
15 | 150639 |
16 | 351521 |
17 | 820296 |
18 | 1914208 |
19 | 4466904 |
20 | 10423761 |
21 | 24324417 |
22 | 56762346 |
23 | 132458006 |
24 | 309097942 |
25 | 721296815 |
26 | 1683185225 |
27 | 3927803988 |
28 | 9165743600 |
29 | 21388759708 |
30 | 49911830577 |
31 | 116471963129 |
[1,1,2,6,14,31,73,172,400,932,2177,5081,11854, 27662,64554,150639,351521,820296,1914208,4466904, 10423761,24324417,56762346,132458006,309097942, 721296815,1683185225,3927803988,9165743600, 21388759708,49911830577,116471963129] |