n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 3 |
3 | 1 |
4 | 9 |
5 | 6 |
6 | 28 |
7 | 27 |
8 | 90 |
9 | 109 |
10 | 297 |
11 | 417 |
12 | 1000 |
13 | 1548 |
14 | 3417 |
15 | 5644 |
16 | 11799 |
17 | 20349 |
18 | 41041 |
19 | 72846 |
20 | 143472 |
21 | 259579 |
22 | 503262 |
23 | 922209 |
24 | 1769365 |
25 | 3269889 |
26 | 6230304 |
27 | 11579032 |
28 | 21960801 |
29 | 40967400 |
30 | 77461435 |
31 | 144863001 |
32 | 273351705 |
33 | 512050438 |
34 | 964918116 |
35 | 1809503019 |
[1,0,3,1,9,6,28,27,90,109,297,417,1000,1548,3417, 5644,11799,20349,41041,72846,143472,259579,503262, 922209,1769365,3269889,6230304,11579032,21960801, 40967400,77461435,144863001,273351705,512050438, 964918116,1809503019] |