n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 11 |
6 | 24 |
7 | 58 |
8 | 149 |
9 | 385 |
10 | 1001 |
11 | 2652 |
12 | 7140 |
13 | 19384 |
14 | 52944 |
15 | 145590 |
16 | 402949 |
17 | 1121117 |
18 | 3133255 |
19 | 8793372 |
20 | 24774557 |
21 | 70045871 |
22 | 198672464 |
23 | 565144064 |
24 | 1611946284 |
25 | 4609140916 |
26 | 13209415116 |
27 | 37937455636 |
28 | 109171460104 |
29 | 314736939884 |
30 | 908930799572 |
31 | 2629120466966 |
[1,1,1,2,5,11,24,58,149,385,1001,2652,7140,19384, 52944,145590,402949,1121117,3133255,8793372, 24774557,70045871,198672464,565144064,1611946284, 4609140916,13209415116,37937455636,109171460104, 314736939884,908930799572,2629120466966] |