n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 16 |
3 | 62 |
4 | 241 |
5 | 936 |
6 | 3636 |
7 | 14124 |
8 | 54865 |
9 | 213124 |
10 | 827884 |
11 | 3215930 |
12 | 12492337 |
13 | 48526704 |
14 | 188502840 |
15 | 732242616 |
16 | 2844409393 |
17 | 11049158596 |
18 | 42920651992 |
19 | 166726031798 |
20 | 647650219393 |
21 | 2515808732184 |
22 | 9772703517132 |
23 | 37962239661540 |
24 | 147464991401185 |
25 | 572830367302660 |
[1,4,16,62,241,936,3636,14124,54865,213124,827884, 3215930,12492337,48526704,188502840,732242616, 2844409393,11049158596,42920651992,166726031798, 647650219393,2515808732184,9772703517132, 37962239661540,147464991401185,572830367302660] |