n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 16 |
4 | 66 |
5 | 348 |
6 | 2298 |
7 | 18504 |
8 | 176841 |
9 | 1958746 |
10 | 24661493 |
11 | 347548376 |
12 | 5415830272 |
13 | 92410046544 |
14 | 1712819553864 |
15 | 34258146124320 |
16 | 735267392077962 |
17 | 16852848083339700 |
18 | 410809882438699346 |
19 | 10611174406149372736 |
20 | 289493459925589039804 |
21 | 8317946739043065421640 |
[1,2,5,16,66,348,2298,18504,176841,1958746, 24661493,347548376,5415830272,92410046544, 1712819553864,34258146124320,735267392077962, 16852848083339700,410809882438699346, 10611174406149372736,289493459925589039804, 8317946739043065421640] |