n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 22 |
5 | 54 |
6 | 136 |
7 | 340 |
8 | 857 |
9 | 2164 |
10 | 5481 |
11 | 13911 |
12 | 35379 |
13 | 90124 |
14 | 229913 |
15 | 587254 |
16 | 1501615 |
17 | 3843314 |
18 | 9845118 |
19 | 25238541 |
20 | 64744455 |
21 | 166190960 |
22 | 426829202 |
23 | 1096784835 |
24 | 2819620836 |
25 | 7251796132 |
26 | 18658280277 |
27 | 48023738374 |
28 | 123648031266 |
29 | 318460151301 |
30 | 820446813941 |
[1,1,3,9,22,54,136,340,857,2164,5481,13911,35379, 90124,229913,587254,1501615,3843314,9845118, 25238541,64744455,166190960,426829202,1096784835, 2819620836,7251796132,18658280277,48023738374, 123648031266,318460151301,820446813941] |