n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 9 |
4 | 23 |
5 | 64 |
6 | 186 |
7 | 551 |
8 | 1645 |
9 | 4926 |
10 | 14768 |
11 | 44293 |
12 | 132867 |
13 | 398588 |
14 | 1195750 |
15 | 3587235 |
16 | 10761689 |
17 | 32285050 |
18 | 96855132 |
19 | 290565377 |
20 | 871696111 |
21 | 2615088312 |
22 | 7845264914 |
23 | 23535794719 |
24 | 70607384133 |
25 | 211822152374 |
26 | 635466457096 |
[1,2,4,9,23,64,186,551,1645,4926,14768,44293, 132867,398588,1195750,3587235,10761689,32285050, 96855132,290565377,871696111,2615088312, 7845264914,23535794719,70607384133,211822152374, 635466457096] |