n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3277 |
3 | 478297 |
4 | 15790321 |
5 | 234750601 |
6 | 2117950381 |
7 | 13564461457 |
8 | 67662254017 |
9 | 278985273841 |
10 | 990099009901 |
11 | 3112703553961 |
12 | 8854610100337 |
13 | 23161037562937 |
14 | 56406126018061 |
15 | 129172239050401 |
16 | 280379743338241 |
17 | 580613195032417 |
18 | 1153271900252557 |
19 | 2207200789455481 |
[1,1,3277,478297,15790321,234750601,2117950381, 13564461457,67662254017,278985273841,990099009901, 3112703553961,8854610100337,23161037562937, 56406126018061,129172239050401,280379743338241, 580613195032417,1153271900252557,2207200789455481] |