n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 15 |
3 | 99 |
4 | 435 |
5 | 1485 |
6 | 4257 |
7 | 10725 |
8 | 24453 |
9 | 51480 |
10 | 101530 |
11 | 189618 |
12 | 338130 |
13 | 579462 |
14 | 959310 |
15 | 1540710 |
16 | 2408934 |
17 | 3677355 |
18 | 5494401 |
19 | 8051725 |
20 | 11593725 |
21 | 16428555 |
22 | 22940775 |
23 | 31605795 |
24 | 43006275 |
25 | 57850650 |
26 | 76993956 |
27 | 101461140 |
28 | 132473044 |
29 | 171475260 |
30 | 220170060 |
31 | 280551612 |
[0,1,15,99,435,1485,4257,10725,24453,51480,101530, 189618,338130,579462,959310,1540710,2408934, 3677355,5494401,8051725,11593725,16428555, 22940775,31605795,43006275,57850650,76993956, 101461140,132473044,171475260,220170060,280551612] |