n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 15 |
4 | 45 |
5 | 77 |
6 | 275 |
7 | 931 |
8 | 1725 |
9 | 1935 |
10 | 5805 |
11 | 29025 |
12 | 41175 |
13 | 166803 |
14 | 1039533 |
15 | 1162047 |
16 | 91801713 |
17 | 419498967 |
18 | 2183383175 |
19 | 19691916585 |
20 | 216611082435 |
21 | 2382721906785 |
22 | 113804487945521 |
23 | 22211221792244703 |
24 | 422013214052649357 |
25 | 425137351586922079 |
26 | 936039253001457601 |
[1,3,15,45,77,275,931,1725,1935,5805,29025,41175, 166803,1039533,1162047,91801713,419498967, 2183383175,19691916585,216611082435,2382721906785, 113804487945521,22211221792244703, 422013214052649357,425137351586922079, 936039253001457601] |