n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 24 |
6 | 75 |
7 | 269 |
8 | 1091 |
9 | 4940 |
10 | 24699 |
11 | 135141 |
12 | 803122 |
13 | 5150259 |
14 | 35436569 |
15 | 260300079 |
16 | 2032260757 |
17 | 16798435176 |
18 | 146498077799 |
19 | 1343752561687 |
20 | 12927673809234 |
21 | 130120187348654 |
22 | 1367117984143960 |
23 | 14962669807495136 |
[1,1,2,4,9,24,75,269,1091,4940,24699,135141, 803122,5150259,35436569,260300079,2032260757, 16798435176,146498077799,1343752561687, 12927673809234,130120187348654,1367117984143960, 14962669807495136] |