n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 5 |
3 | 22 |
4 | 100 |
5 | 493 |
6 | 2701 |
7 | 16678 |
8 | 116704 |
9 | 923473 |
10 | 8204077 |
11 | 81069166 |
12 | 882762292 |
13 | 10503611245 |
14 | 135576241957 |
15 | 1886597854894 |
16 | 28151936397856 |
17 | 448397396131969 |
18 | 7592570340752053 |
19 | 136187683731334054 |
20 | 2579494839314653540 |
21 | 51445637954467827661 |
[0,1,5,22,100,493,2701,16678,116704,923473, 8204077,81069166,882762292,10503611245, 135576241957,1886597854894,28151936397856, 448397396131969,7592570340752053, 136187683731334054,2579494839314653540, 51445637954467827661] |