n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 17 |
5 | 42 |
6 | 107 |
7 | 275 |
8 | 715 |
9 | 1884 |
10 | 5009 |
11 | 13421 |
12 | 36224 |
13 | 98382 |
14 | 268657 |
15 | 737244 |
16 | 2032035 |
17 | 5622938 |
18 | 15615186 |
19 | 43505382 |
20 | 121570407 |
21 | 340639265 |
22 | 956861955 |
23 | 2694064938 |
24 | 7601455079 |
25 | 21490621769 |
26 | 60870280259 |
27 | 172707869088 |
28 | 490818655346 |
29 | 1396973741672 |
30 | 3981748142925 |
[1,1,3,7,17,42,107,275,715,1884,5009,13421,36224, 98382,268657,737244,2032035,5622938,15615186, 43505382,121570407,340639265,956861955,2694064938, 7601455079,21490621769,60870280259,172707869088, 490818655346,1396973741672,3981748142925] |