n | a(n) |
---|---|
0 | 1 |
1 | 21 |
2 | 310 |
3 | 3990 |
4 | 48031 |
5 | 557571 |
6 | 6338620 |
7 | 71164380 |
8 | 792891661 |
9 | 8792412321 |
10 | 97210822930 |
11 | 1072779241170 |
12 | 11824793506891 |
13 | 130242283148271 |
14 | 1433852001421240 |
15 | 15780680237514360 |
16 | 173645640208869721 |
17 | 1910509145600189421 |
18 | 21018450325107861550 |
19 | 231222901641889183950 |
[1,21,310,3990,48031,557571,6338620,71164380, 792891661,8792412321,97210822930,1072779241170, 11824793506891,130242283148271,1433852001421240, 15780680237514360,173645640208869721, 1910509145600189421,21018450325107861550, 231222901641889183950] |