n | a(n) |
---|---|
7 | 1 |
8 | 21 |
9 | 231 |
10 | 1792 |
11 | 11067 |
12 | 58044 |
13 | 268940 |
14 | 1129999 |
15 | 4385136 |
16 | 15928948 |
17 | 54711958 |
18 | 179090772 |
19 | 562156203 |
20 | 1700628930 |
21 | 4978677738 |
22 | 14153099499 |
23 | 39180254316 |
24 | 105881154624 |
25 | 279906223856 |
26 | 725158329175 |
27 | 1844006226090 |
28 | 4608929551309 |
29 | 11336379967178 |
30 | 27469729015029 |
[1,21,231,1792,11067,58044,268940,1129999,4385136, 15928948,54711958,179090772,562156203,1700628930, 4978677738,14153099499,39180254316,105881154624, 279906223856,725158329175,1844006226090, 4608929551309,11336379967178,27469729015029] |