n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 19 |
3 | 93 |
4 | 459 |
5 | 2273 |
6 | 11274 |
7 | 55964 |
8 | 277924 |
9 | 1380527 |
10 | 6858356 |
11 | 34074280 |
12 | 169297743 |
13 | 841173845 |
14 | 4179517118 |
15 | 20766807551 |
16 | 103184684826 |
17 | 512698227699 |
18 | 2547469553647 |
19 | 12657750705603 |
20 | 62893284231103 |
21 | 312501512711984 |
22 | 1552744642741738 |
23 | 7715214279423070 |
[1,4,19,93,459,2273,11274,55964,277924,1380527, 6858356,34074280,169297743,841173845,4179517118, 20766807551,103184684826,512698227699, 2547469553647,12657750705603,62893284231103, 312501512711984,1552744642741738,7715214279423070] |