n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 4 |
4 | 21 |
5 | 126 |
6 | 817 |
7 | 5574 |
8 | 39418 |
9 | 286286 |
10 | 2122491 |
11 | 15995696 |
12 | 122166551 |
13 | 943430560 |
14 | 7353998931 |
15 | 57783603764 |
16 | 457176705018 |
17 | 3639000808140 |
18 | 29119701312548 |
19 | 234120338807316 |
20 | 1890257713736568 |
21 | 15319612051101438 |
22 | 124583720191974904 |
23 | 1016307862050772614 |
24 | 8314217332992596050 |
25 | 68193993494598345010 |
26 | 560671685990956975367 |
27 | 4619857060146629819160 |
28 | 38144728242794104501561 |
29 | 315546193363448088862064 |
30 | 2614910268303053285326541 |
[1,1,4,21,126,817,5574,39418,286286,2122491, 15995696,122166551,943430560,7353998931, 57783603764,457176705018,3639000808140, 29119701312548,234120338807316,1890257713736568, 15319612051101438,124583720191974904, 1016307862050772614,8314217332992596050, 68193993494598345010,560671685990956975367, 4619857060146629819160,38144728242794104501561, 315546193363448088862064, 2614910268303053285326541] |