n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 7 |
5 | 14 |
6 | 39 |
7 | 97 |
8 | 308 |
9 | 897 |
10 | 3139 |
11 | 10304 |
12 | 38997 |
13 | 140893 |
14 | 570002 |
15 | 2230599 |
16 | 9567979 |
17 | 40091222 |
18 | 181203603 |
19 | 805962157 |
20 | 3819522284 |
21 | 17912075229 |
22 | 88646095447 |
23 | 435959031488 |
24 | 2245454002137 |
25 | 11530035000169 |
26 | 61627679281154 |
[1,1,2,3,7,14,39,97,308,897,3139,10304,38997, 140893,570002,2230599,9567979,40091222,181203603, 805962157,3819522284,17912075229,88646095447, 435959031488,2245454002137,11530035000169, 61627679281154] |