n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 20 |
3 | 65 |
4 | 185 |
5 | 481 |
6 | 1165 |
7 | 2665 |
8 | 5820 |
9 | 12220 |
10 | 24802 |
11 | 48880 |
12 | 93865 |
13 | 176125 |
14 | 323685 |
15 | 583798 |
16 | 1035060 |
17 | 1806600 |
18 | 3108085 |
19 | 5276305 |
20 | 8846884 |
21 | 14663645 |
22 | 24044285 |
23 | 39029560 |
24 | 62755345 |
25 | 100004806 |
26 | 158022900 |
27 | 247710570 |
28 | 385366265 |
29 | 595212280 |
30 | 913040649 |
31 | 1391449780 |
[1,5,20,65,185,481,1165,2665,5820,12220,24802, 48880,93865,176125,323685,583798,1035060,1806600, 3108085,5276305,8846884,14663645,24044285, 39029560,62755345,100004806,158022900,247710570, 385366265,595212280,913040649,1391449780] |