n | a(n) |
---|---|
1 | 3 |
2 | 51 |
3 | 131 |
4 | 353 |
5 | 4364 |
6 | 21250 |
7 | 95144 |
8 | 744225 |
9 | 4783771 |
10 | 27463112 |
11 | 190991767 |
12 | 1292234142 |
13 | 8201782608 |
14 | 55678561641 |
15 | 376785247633 |
16 | 2482003918431 |
17 | 16743709504153 |
18 | 112914336054629 |
19 | 753657230308479 |
20 | 5073402400236330 |
[3,51,131,353,4364,21250,95144,744225,4783771, 27463112,190991767,1292234142,8201782608, 55678561641,376785247633,2482003918431, 16743709504153,112914336054629,753657230308479, 5073402400236330] |