n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 39 |
5 | 137 |
6 | 623 |
7 | 2441 |
8 | 11359 |
9 | 47521 |
10 | 224359 |
11 | 977861 |
12 | 4663291 |
13 | 20889033 |
14 | 100338007 |
15 | 458283489 |
16 | 2213130847 |
17 | 10255221601 |
18 | 49728217447 |
19 | 232997035357 |
20 | 1133494314963 |
21 | 5357336598661 |
22 | 26131321902595 |
23 | 124372530000641 |
24 | 607970318813431 |
25 | 2910173855944909 |
26 | 14251859249211531 |
27 | 68541473702526857 |
[1,1,3,9,39,137,623,2441,11359,47521,224359, 977861,4663291,20889033,100338007,458283489, 2213130847,10255221601,49728217447,232997035357, 1133494314963,5357336598661,26131321902595, 124372530000641,607970318813431,2910173855944909, 14251859249211531,68541473702526857] |