n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 15 |
4 | 48 |
5 | 171 |
6 | 637 |
7 | 2428 |
8 | 9550 |
9 | 38349 |
10 | 156705 |
11 | 650514 |
12 | 2730685 |
13 | 11586035 |
14 | 49633476 |
15 | 214245357 |
16 | 931290307 |
17 | 4073517547 |
18 | 17914555800 |
19 | 79177186936 |
20 | 351493613879 |
21 | 1566615341461 |
22 | 7008105335834 |
23 | 31454517640160 |
24 | 141606919092096 |
25 | 639300738693485 |
26 | 2893656057013955 |
27 | 13128807209968934 |
[1,2,5,15,48,171,637,2428,9550,38349,156705, 650514,2730685,11586035,49633476,214245357, 931290307,4073517547,17914555800,79177186936, 351493613879,1566615341461,7008105335834, 31454517640160,141606919092096,639300738693485, 2893656057013955,13128807209968934] |