n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 4 |
5 | 7 |
6 | 18 |
7 | 37 |
8 | 96 |
9 | 239 |
10 | 658 |
11 | 1810 |
12 | 5358 |
13 | 16057 |
14 | 50373 |
15 | 161811 |
16 | 536964 |
17 | 1826151 |
18 | 6380481 |
19 | 22822280 |
20 | 83587920 |
21 | 312954111 |
22 | 1197178941 |
23 | 4674642341 |
24 | 18620255306 |
25 | 75606404857 |
26 | 312763294254 |
27 | 1317356836235 |
28 | 5646694922172 |
29 | 24618969819915 |
30 | 109125629486233 |
31 | 491554330852608 |
[1,1,1,2,4,7,18,37,96,239,658,1810,5358,16057, 50373,161811,536964,1826151,6380481,22822280, 83587920,312954111,1197178941,4674642341, 18620255306,75606404857,312763294254, 1317356836235,5646694922172,24618969819915, 109125629486233,491554330852608] |