n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 34 |
4 | 265 |
5 | 2232 |
6 | 19766 |
7 | 181300 |
8 | 1706737 |
9 | 16392049 |
10 | 159959240 |
11 | 1581278838 |
12 | 15800619070 |
13 | 159321921844 |
14 | 1618981274136 |
15 | 16562211506496 |
16 | 170426473666497 |
17 | 1762771226922775 |
18 | 18316562635133813 |
19 | 191104193378725552 |
20 | 2001224271292820200 |
[1,1,5,34,265,2232,19766,181300,1706737,16392049, 159959240,1581278838,15800619070,159321921844, 1618981274136,16562211506496,170426473666497, 1762771226922775,18316562635133813, 191104193378725552,2001224271292820200] |