n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 1 |
7 | 4 |
8 | 10 |
9 | 20 |
10 | 35 |
11 | 56 |
12 | 84 |
13 | 120 |
14 | 166 |
15 | 228 |
16 | 322 |
17 | 484 |
18 | 785 |
19 | 1352 |
20 | 2396 |
21 | 4248 |
22 | 7405 |
23 | 12592 |
24 | 20856 |
25 | 33728 |
26 | 53524 |
27 | 83912 |
28 | 130956 |
29 | 204968 |
30 | 323665 |
31 | 517356 |
32 | 837206 |
33 | 1368108 |
34 | 2248479 |
35 | 3700648 |
36 | 6077900 |
37 | 9938488 |
38 | 16164330 |
39 | 26154700 |
40 | 42146078 |
[0,0,0,0,0,0,1,4,10,20,35,56,84,120,166,228,322, 484,785,1352,2396,4248,7405,12592,20856,33728, 53524,83912,130956,204968,323665,517356,837206, 1368108,2248479,3700648,6077900,9938488,16164330, 26154700,42146078] |