n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 9 |
3 | 45 |
4 | 165 |
5 | 496 |
6 | 1297 |
7 | 3058 |
8 | 6655 |
9 | 13586 |
10 | 26323 |
11 | 48829 |
12 | 87308 |
13 | 151282 |
14 | 255125 |
15 | 420234 |
16 | 678086 |
17 | 1074525 |
18 | 1675754 |
19 | 2576688 |
20 | 3912574 |
21 | 5875129 |
22 | 8734923 |
23 | 12872391 |
24 | 18820765 |
25 | 27325469 |
26 | 39426248 |
27 | 56570687 |
28 | 80771068 |
29 | 114821057 |
30 | 162594985 |
[0,1,9,45,165,496,1297,3058,6655,13586,26323, 48829,87308,151282,255125,420234,678086,1074525, 1675754,2576688,3912574,5875129,8734923,12872391, 18820765,27325469,39426248,56570687,80771068, 114821057,162594985] |