n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 3 |
5 | 6 |
6 | 13 |
7 | 21 |
8 | 45 |
9 | 70 |
10 | 154 |
11 | 235 |
12 | 525 |
13 | 791 |
14 | 1793 |
15 | 2681 |
16 | 6153 |
17 | 9150 |
18 | 21206 |
19 | 31401 |
20 | 73359 |
21 | 108262 |
22 | 254607 |
23 | 374715 |
24 | 886171 |
25 | 1301235 |
26 | 3091971 |
27 | 4531423 |
28 | 10811671 |
29 | 15818791 |
30 | 37877401 |
31 | 55339849 |
32 | 132924649 |
33 | 193962894 |
34 | 467187454 |
[0,0,1,3,6,13,21,45,70,154,235,525,791,1793,2681, 6153,9150,21206,31401,73359,108262,254607,374715, 886171,1301235,3091971,4531423,10811671,15818791, 37877401,55339849,132924649,193962894,467187454] |