n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 9 |
4 | 25 |
5 | 88 |
6 | 406 |
7 | 2451 |
8 | 19450 |
9 | 202681 |
10 | 2769965 |
11 | 49519392 |
12 | 1154411138 |
13 | 34978238590 |
14 | 1373171398361 |
15 | 69648249299517 |
16 | 4552778914494604 |
[1,2,4,9,25,88,406,2451,19450,202681,2769965, 49519392,1154411138,34978238590,1373171398361, 69648249299517,4552778914494604] |