n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 17 |
3 | 73 |
4 | 315 |
5 | 1362 |
6 | 5895 |
7 | 25528 |
8 | 110579 |
9 | 479068 |
10 | 2075683 |
11 | 8993897 |
12 | 38971621 |
13 | 168871854 |
14 | 731764089 |
15 | 3170939841 |
16 | 13740635787 |
17 | 59542470588 |
18 | 258016586955 |
19 | 1118069698011 |
20 | 4844962624953 |
21 | 20994821090790 |
22 | 90977510544237 |
23 | 394235745437286 |
24 | 1708354520308101 |
[1,4,17,73,315,1362,5895,25528,110579,479068, 2075683,8993897,38971621,168871854,731764089, 3170939841,13740635787,59542470588,258016586955, 1118069698011,4844962624953,20994821090790, 90977510544237,394235745437286,1708354520308101] |