n | a(n) |
---|---|
2 | 3 |
3 | 9 |
4 | 20 |
5 | 40 |
6 | 77 |
7 | 145 |
8 | 270 |
9 | 500 |
10 | 923 |
11 | 1701 |
12 | 3132 |
13 | 5764 |
14 | 10605 |
15 | 19509 |
16 | 35886 |
17 | 66008 |
18 | 121411 |
19 | 223313 |
20 | 410740 |
21 | 755472 |
22 | 1389533 |
23 | 2555753 |
24 | 4700766 |
25 | 8646060 |
26 | 15902587 |
27 | 29249421 |
28 | 53798076 |
29 | 98950092 |
30 | 181997597 |
31 | 334745773 |
32 | 615693470 |
[3,9,20,40,77,145,270,500,923,1701,3132,5764, 10605,19509,35886,66008,121411,223313,410740, 755472,1389533,2555753,4700766,8646060,15902587, 29249421,53798076,98950092,181997597,334745773, 615693470] |