n | a(n) |
---|---|
0 | 1 |
1 | 13 |
2 | 50 |
3 | 185 |
4 | 686 |
5 | 2562 |
6 | 9636 |
7 | 36465 |
8 | 138710 |
9 | 529958 |
10 | 2032316 |
11 | 7818538 |
12 | 30161740 |
13 | 116635300 |
14 | 451980360 |
15 | 1754766945 |
16 | 6824030310 |
17 | 26577181950 |
18 | 103647597900 |
19 | 404703270510 |
20 | 1581953021220 |
21 | 6189965556060 |
22 | 24242879364600 |
23 | 95027512981050 |
24 | 372782298576636 |
25 | 1463445866837052 |
[1,13,50,185,686,2562,9636,36465,138710,529958, 2032316,7818538,30161740,116635300,451980360, 1754766945,6824030310,26577181950,103647597900, 404703270510,1581953021220,6189965556060, 24242879364600,95027512981050,372782298576636, 1463445866837052] |