n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 76 |
5 | 3773 |
6 | 66201 |
7 | 651193 |
8 | 4318451 |
9 | 21754341 |
10 | 89267490 |
11 | 312974387 |
12 | 968069337 |
13 | 2704548145 |
14 | 6942663519 |
15 | 16594368633 |
16 | 37311795887 |
17 | 79570707969 |
18 | 162013125016 |
19 | 316669793867 |
20 | 596873304925 |
21 | 1089009784181 |
22 | 1929545889877 |
23 | 3329316638249 |
24 | 5607471933963 |
25 | 9238336533613 |
[0,0,1,76,3773,66201,651193,4318451,21754341, 89267490,312974387,968069337,2704548145, 6942663519,16594368633,37311795887,79570707969, 162013125016,316669793867,596873304925, 1089009784181,1929545889877,3329316638249, 5607471933963,9238336533613] |