n | a(n) |
---|---|
0 | 15 |
1 | 45 |
2 | 165 |
3 | 696 |
4 | 3281 |
5 | 16972 |
6 | 95129 |
7 | 572402 |
8 | 3670878 |
9 | 24947043 |
10 | 178812542 |
11 | 1346450836 |
12 | 10615403987 |
13 | 87372899947 |
14 | 748880541151 |
15 | 6669235464674 |
16 | 61589598614335 |
17 | 588758112457852 |
18 | 5816628899785745 |
19 | 59303810671002372 |
20 | 623158622145920252 |
21 | 6740560881383009077 |
[15,45,165,696,3281,16972,95129,572402,3670878, 24947043,178812542,1346450836,10615403987, 87372899947,748880541151,6669235464674, 61589598614335,588758112457852,5816628899785745, 59303810671002372,623158622145920252, 6740560881383009077] |