n | a(n) |
---|---|
0 | 1 |
1 | 31 |
2 | 930 |
3 | 27900 |
4 | 837000 |
5 | 25110000 |
6 | 753300000 |
7 | 22599000000 |
8 | 677970000000 |
9 | 20339100000000 |
10 | 610173000000000 |
11 | 18305190000000000 |
12 | 549155700000000000 |
13 | 16474671000000000000 |
14 | 494240130000000000000 |
15 | 14827203899999999999535 |
[1,31,930,27900,837000,25110000,753300000, 22599000000,677970000000,20339100000000, 610173000000000,18305190000000000, 549155700000000000,16474671000000000000, 494240130000000000000,14827203899999999999535] |