n | a(n) |
---|---|
1 | 2 |
2 | 6 |
3 | 34 |
4 | 238 |
5 | 1858 |
6 | 15510 |
7 | 135490 |
8 | 1223134 |
9 | 11320066 |
10 | 106830502 |
11 | 1024144482 |
12 | 9945711566 |
13 | 97634828354 |
14 | 967298498358 |
15 | 9659274283650 |
16 | 97119829841854 |
17 | 982391779220482 |
18 | 9990160542904134 |
19 | 102074758837531810 |
20 | 1047391288012377774 |
21 | 10788532748880319298 |
[2,6,34,238,1858,15510,135490,1223134,11320066, 106830502,1024144482,9945711566,97634828354, 967298498358,9659274283650,97119829841854, 982391779220482,9990160542904134, 102074758837531810,1047391288012377774, 10788532748880319298] |