n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 7 |
5 | 21 |
6 | 57 |
7 | 157 |
8 | 421 |
9 | 1123 |
10 | 2971 |
11 | 7833 |
12 | 20593 |
13 | 54057 |
14 | 141753 |
15 | 371491 |
16 | 973183 |
17 | 2548813 |
18 | 6674473 |
19 | 17476581 |
20 | 45758461 |
21 | 119803971 |
22 | 313661811 |
23 | 821194993 |
24 | 2149945057 |
25 | 5628675601 |
26 | 14736139057 |
27 | 38579834307 |
28 | 101003513911 |
29 | 264430950213 |
30 | 692289729561 |
[1,1,1,3,7,21,57,157,421,1123,2971,7833,20593, 54057,141753,371491,973183,2548813,6674473, 17476581,45758461,119803971,313661811,821194993, 2149945057,5628675601,14736139057,38579834307, 101003513911,264430950213,692289729561] |