n | a(n) |
---|---|
1 | 1 |
2 | 10 |
3 | 70 |
4 | 491 |
5 | 3440 |
6 | 24080 |
7 | 168561 |
8 | 1179930 |
9 | 8259510 |
10 | 57816571 |
11 | 404716000 |
12 | 2833012000 |
13 | 19831084001 |
14 | 138817588010 |
15 | 971723116070 |
16 | 6802061812491 |
17 | 47614432687440 |
18 | 333301028812080 |
19 | 2333107201684561 |
[1,10,70,491,3440,24080,168561,1179930,8259510, 57816571,404716000,2833012000,19831084001, 138817588010,971723116070,6802061812491, 47614432687440,333301028812080,2333107201684561] |