n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 31 |
4 | 362 |
5 | 5567 |
6 | 104229 |
7 | 2268586 |
8 | 55817457 |
9 | 1524956611 |
10 | 45699911560 |
11 | 1489007130546 |
12 | 52390324106713 |
13 | 1979726546053502 |
14 | 79978929224189504 |
15 | 3440756672193895992 |
16 | 157085559415640319126 |
17 | 7587124626671398460006 |
18 | 386598739562989187413005 |
19 | 20728976430148069600767400 |
20 | 1166849728839227202686314988 |
[1,1,4,31,362,5567,104229,2268586,55817457, 1524956611,45699911560,1489007130546, 52390324106713,1979726546053502,79978929224189504, 3440756672193895992,157085559415640319126, 7587124626671398460006,386598739562989187413005, 20728976430148069600767400, 1166849728839227202686314988] |