n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 3 |
4 | 13 |
5 | 25 |
6 | 137 |
7 | 245 |
8 | 871 |
9 | 517 |
10 | 4629 |
11 | 8349 |
12 | 45517 |
13 | 83317 |
14 | 1074679 |
15 | 1992127 |
16 | 7424789 |
17 | 13901189 |
18 | 78403447 |
19 | 147940327 |
20 | 280060651 |
21 | 531718651 |
22 | 11133725681 |
23 | 21243819521 |
24 | 40621501691 |
25 | 15565330735 |
26 | 388375065019 |
27 | 248882304985 |
28 | 479199924517 |
29 | 923951191477 |
30 | 2973006070891 |
[0,1,3,13,25,137,245,871,517,4629,8349,45517, 83317,1074679,1992127,7424789,13901189,78403447, 147940327,280060651,531718651,11133725681, 21243819521,40621501691,15565330735,388375065019, 248882304985,479199924517,923951191477, 2973006070891] |