n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 15 |
3 | 76 |
4 | 413 |
5 | 2281 |
6 | 12889 |
7 | 73541 |
8 | 423921 |
9 | 2458383 |
10 | 14335834 |
11 | 83922633 |
12 | 492956132 |
13 | 2903156720 |
14 | 17135951352 |
15 | 101330250964 |
16 | 600140389918 |
17 | 3559105598556 |
18 | 21131319068601 |
19 | 125585737386758 |
20 | 747013179830622 |
21 | 4446753991483192 |
22 | 26487831271866795 |
23 | 157871848076357815 |
24 | 941434100552046728 |
[1,3,15,76,413,2281,12889,73541,423921,2458383, 14335834,83922633,492956132,2903156720, 17135951352,101330250964,600140389918, 3559105598556,21131319068601,125585737386758, 747013179830622,4446753991483192, 26487831271866795,157871848076357815, 941434100552046728] |