n | a(n) |
---|---|
5 | 0 |
6 | 1 |
7 | 21 |
8 | 242 |
9 | 2161 |
10 | 17081 |
11 | 127540 |
12 | 931343 |
13 | 6781012 |
14 | 49778592 |
15 | 370879817 |
16 | 2815885116 |
17 | 21840126520 |
18 | 173297901709 |
19 | 1407962621143 |
20 | 11717253906772 |
21 | 99896499620107 |
22 | 872434202618833 |
23 | 7803398795633086 |
24 | 71462039680103117 |
25 | 669812596793753200 |
26 | 6423126853283399476 |
[0,1,21,242,2161,17081,127540,931343,6781012, 49778592,370879817,2815885116,21840126520, 173297901709,1407962621143,11717253906772, 99896499620107,872434202618833,7803398795633086, 71462039680103117,669812596793753200, 6423126853283399476] |