n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 7 |
3 | 28 |
4 | 231 |
5 | 2100 |
6 | 23884 |
7 | 285390 |
8 | 3626295 |
9 | 47813815 |
10 | 650367788 |
11 | 9066061200 |
12 | 128987761308 |
13 | 1866877313448 |
14 | 27417589615234 |
15 | 407771633434368 |
16 | 6131640607962135 |
17 | 93096368350684727 |
18 | 1425633586192690945 |
19 | 21998953427963954554 |
20 | 341803227016091180620 |
[1,1,7,28,231,2100,23884,285390,3626295,47813815, 650367788,9066061200,128987761308,1866877313448, 27417589615234,407771633434368,6131640607962135, 93096368350684727,1425633586192690945, 21998953427963954554,341803227016091180620] |