n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 126 |
3 | 1818 |
4 | 32130 |
5 | 452142 |
6 | 8006526 |
7 | 117619290 |
8 | 1999520154 |
9 | 31550881374 |
10 | 527781570174 |
11 | 8556328428786 |
12 | 145177242834330 |
13 | 2404855490356782 |
14 | 40907085509085750 |
15 | 691705559193384114 |
16 | 11840743106503713594 |
17 | 202344257179543757526 |
18 | 3487245860820904368822 |
19 | 60077736592697832105330 |
[1,6,126,1818,32130,452142,8006526,117619290, 1999520154,31550881374,527781570174,8556328428786, 145177242834330,2404855490356782, 40907085509085750,691705559193384114, 11840743106503713594,202344257179543757526, 3487245860820904368822,60077736592697832105330] |