n | a(n) |
---|---|
1 | 0 |
2 | 280 |
3 | 637 |
4 | 1437 |
5 | 2937 |
6 | 4960 |
7 | 9580 |
8 | 18300 |
9 | 30081 |
10 | 57001 |
11 | 107821 |
12 | 176484 |
13 | 333384 |
14 | 629584 |
15 | 1029781 |
16 | 1944261 |
17 | 3670641 |
18 | 6003160 |
19 | 11333140 |
20 | 21395220 |
21 | 34990137 |
22 | 66055537 |
23 | 124701637 |
24 | 203938620 |
25 | 385001040 |
26 | 726815560 |
27 | 1188642541 |
28 | 2243951661 |
29 | 4236192681 |
30 | 6927917584 |
[0,280,637,1437,2937,4960,9580,18300,30081,57001, 107821,176484,333384,629584,1029781,1944261, 3670641,6003160,11333140,21395220,34990137, 66055537,124701637,203938620,385001040,726815560, 1188642541,2243951661,4236192681,6927917584] |