n | a(n) |
---|---|
0 | 1 |
1 | 55 |
2 | 883 |
3 | 6085 |
4 | 26461 |
5 | 86491 |
6 | 232975 |
7 | 545833 |
8 | 1151065 |
9 | 2235871 |
10 | 4065931 |
11 | 7004845 |
12 | 11535733 |
13 | 18284995 |
14 | 28048231 |
15 | 41818321 |
16 | 60815665 |
17 | 86520583 |
18 | 120707875 |
19 | 165483541 |
20 | 223323661 |
21 | 297115435 |
[1,55,883,6085,26461,86491,232975,545833,1151065, 2235871,4065931,7004845,11535733,18284995, 28048231,41818321,60815665,86520583,120707875, 165483541,223323661,297115435] |