n | a(n) |
---|---|
0 | 1 |
1 | 7 |
2 | 31 |
3 | 105 |
4 | 300 |
5 | 756 |
6 | 1732 |
7 | 3676 |
8 | 7330 |
9 | 13870 |
10 | 25102 |
11 | 43714 |
12 | 73612 |
13 | 120340 |
14 | 191620 |
15 | 298012 |
16 | 453739 |
17 | 677677 |
18 | 994565 |
19 | 1436435 |
20 | 2044328 |
21 | 2870296 |
22 | 3979768 |
23 | 5454280 |
24 | 7394660 |
25 | 9924668 |
26 | 13195196 |
27 | 17389028 |
28 | 22726280 |
29 | 29470520 |
30 | 37935704 |
31 | 48493928 |
32 | 61584149 |
[1,7,31,105,300,756,1732,3676,7330,13870,25102, 43714,73612,120340,191620,298012,453739,677677, 994565,1436435,2044328,2870296,3979768,5454280, 7394660,9924668,13195196,17389028,22726280, 29470520,37935704,48493928,61584149] |