n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 15 |
4 | 86 |
5 | 534 |
6 | 3481 |
7 | 23502 |
8 | 162913 |
9 | 1152870 |
10 | 8294738 |
11 | 60494549 |
12 | 446205905 |
13 | 3322769321 |
14 | 24946773111 |
15 | 188625900446 |
16 | 1435074454755 |
17 | 10977812452428 |
18 | 84384157287999 |
19 | 651459315795897 |
20 | 5049008190434659 |
21 | 39269513463794006 |
22 | 306405169166373418 |
[1,3,15,86,534,3481,23502,162913,1152870,8294738, 60494549,446205905,3322769321,24946773111, 188625900446,1435074454755,10977812452428, 84384157287999,651459315795897,5049008190434659, 39269513463794006,306405169166373418] |