n | a(n) |
---|---|
3 | 7 |
4 | 23 |
5 | 56 |
6 | 120 |
7 | 241 |
8 | 467 |
9 | 886 |
10 | 1660 |
11 | 3087 |
12 | 5715 |
13 | 10552 |
14 | 19452 |
15 | 35825 |
16 | 65943 |
17 | 121342 |
18 | 223240 |
19 | 410663 |
20 | 755391 |
21 | 1389448 |
22 | 2555664 |
23 | 4700673 |
24 | 8645963 |
25 | 15902486 |
26 | 29249316 |
27 | 53797967 |
28 | 98949979 |
29 | 181997480 |
30 | 334745652 |
31 | 615693345 |
[7,23,56,120,241,467,886,1660,3087,5715,10552, 19452,35825,65943,121342,223240,410663,755391, 1389448,2555664,4700673,8645963,15902486,29249316, 53797967,98949979,181997480,334745652,615693345] |