n | a(n) |
---|---|
6 | 1 |
7 | 63 |
8 | 966 |
9 | 7770 |
10 | 42525 |
11 | 179487 |
12 | 627396 |
13 | 1899612 |
14 | 5135130 |
15 | 12662650 |
16 | 28936908 |
17 | 62022324 |
18 | 125854638 |
19 | 243577530 |
20 | 452329200 |
21 | 809944464 |
22 | 1404142047 |
23 | 2364885369 |
24 | 3880739170 |
25 | 6220194750 |
26 | 9759104355 |
27 | 15015551265 |
28 | 22693687380 |
29 | 33738295500 |
30 | 49402080000 |
31 | 71327958156 |
[1,63,966,7770,42525,179487,627396,1899612, 5135130,12662650,28936908,62022324,125854638, 243577530,452329200,809944464,1404142047, 2364885369,3880739170,6220194750,9759104355, 15015551265,22693687380,33738295500,49402080000, 71327958156] |