n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 12 |
5 | 29 |
6 | 72 |
7 | 181 |
8 | 460 |
9 | 1178 |
10 | 3030 |
11 | 7815 |
12 | 20188 |
13 | 52193 |
14 | 134992 |
15 | 349205 |
16 | 903398 |
17 | 2337135 |
18 | 6046310 |
19 | 15642402 |
20 | 40469824 |
21 | 104708914 |
22 | 270937964 |
23 | 701129755 |
24 | 1814581514 |
25 | 4696886211 |
26 | 12159165336 |
27 | 31481922733 |
28 | 81523933604 |
29 | 211143257951 |
[0,1,2,5,12,29,72,181,460,1178,3030,7815,20188, 52193,134992,349205,903398,2337135,6046310, 15642402,40469824,104708914,270937964,701129755, 1814581514,4696886211,12159165336,31481922733, 81523933604,211143257951] |