n | a(n) |
---|---|
0 | -1 |
1 | 6 |
2 | 4 |
3 | 21 |
4 | 44 |
5 | 126 |
6 | 319 |
7 | 846 |
8 | 2204 |
9 | 5781 |
10 | 15124 |
11 | 39606 |
12 | 103679 |
13 | 271446 |
14 | 710644 |
15 | 1860501 |
16 | 4870844 |
17 | 12752046 |
18 | 33385279 |
19 | 87403806 |
20 | 228826124 |
21 | 599074581 |
22 | 1568397604 |
23 | 4106118246 |
24 | 10749957119 |
25 | 28143753126 |
26 | 73681302244 |
27 | 192900153621 |
28 | 505019158604 |
29 | 1322157322206 |
30 | 3461452807999 |
[-1,6,4,21,44,126,319,846,2204,5781,15124,39606, 103679,271446,710644,1860501,4870844,12752046, 33385279,87403806,228826124,599074581,1568397604, 4106118246,10749957119,28143753126,73681302244, 192900153621,505019158604,1322157322206, 3461452807999] |