n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 6 |
4 | 13 |
5 | 25 |
6 | 58 |
7 | 121 |
8 | 283 |
9 | 646 |
10 | 1527 |
11 | 3601 |
12 | 8678 |
13 | 20881 |
14 | 50823 |
15 | 124054 |
16 | 304573 |
17 | 750121 |
18 | 1855098 |
19 | 4600201 |
20 | 11442085 |
21 | 28527446 |
22 | 71292603 |
23 | 178526881 |
24 | 447919418 |
25 | 1125750145 |
26 | 2833906683 |
27 | 7144450566 |
28 | 18036423973 |
[1,3,6,13,25,58,121,283,646,1527,3601,8678,20881, 50823,124054,304573,750121,1855098,4600201, 11442085,28527446,71292603,178526881,447919418, 1125750145,2833906683,7144450566,18036423973] |