n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 3 |
4 | 6 |
5 | 10 |
6 | 15 |
7 | 21 |
8 | 29 |
9 | 45 |
10 | 90 |
11 | 220 |
12 | 561 |
13 | 1365 |
14 | 3095 |
15 | 6555 |
16 | 13110 |
17 | 25126 |
18 | 46971 |
19 | 87381 |
20 | 164921 |
21 | 320001 |
22 | 640002 |
23 | 1309528 |
24 | 2707629 |
25 | 5592405 |
26 | 11450531 |
27 | 23166783 |
28 | 46333566 |
29 | 91869970 |
30 | 181348455 |
31 | 357913941 |
32 | 708653429 |
33 | 1410132405 |
34 | 2820264810 |
35 | 5662052980 |
[0,0,1,3,6,10,15,21,29,45,90,220,561,1365,3095, 6555,13110,25126,46971,87381,164921,320001,640002, 1309528,2707629,5592405,11450531,23166783, 46333566,91869970,181348455,357913941,708653429, 1410132405,2820264810,5662052980] |