n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 25 |
4 | 136 |
5 | 769 |
6 | 4300 |
7 | 24121 |
8 | 135184 |
9 | 757825 |
10 | 4247956 |
11 | 23812249 |
12 | 133480600 |
13 | 748232641 |
14 | 4194255964 |
15 | 23511117625 |
16 | 131792774176 |
17 | 738771155329 |
18 | 4141219588900 |
19 | 23213818753561 |
20 | 130126251314344 |
21 | 729429374039425 |
22 | 4088853757986796 |
23 | 22920279398302009 |
[0,1,4,25,136,769,4300,24121,135184,757825, 4247956,23812249,133480600,748232641,4194255964, 23511117625,131792774176,738771155329, 4141219588900,23213818753561,130126251314344, 729429374039425,4088853757986796, 22920279398302009] |