n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 7 |
4 | 22 |
5 | 64 |
6 | 191 |
7 | 567 |
8 | 1689 |
9 | 5033 |
10 | 15013 |
11 | 44809 |
12 | 133816 |
13 | 399802 |
14 | 1194949 |
15 | 3572693 |
16 | 10684758 |
17 | 31962456 |
18 | 95633229 |
19 | 286193409 |
20 | 856610214 |
21 | 2564317356 |
22 | 7677475521 |
23 | 22988860305 |
24 | 68843627049 |
25 | 206183053485 |
26 | 617563017927 |
27 | 1849887488987 |
[1,2,4,7,22,64,191,567,1689,5033,15013,44809, 133816,399802,1194949,3572693,10684758,31962456, 95633229,286193409,856610214,2564317356, 7677475521,22988860305,68843627049,206183053485, 617563017927,1849887488987] |