n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 22 |
5 | 89 |
6 | 379 |
7 | 1661 |
8 | 7405 |
9 | 33367 |
10 | 151398 |
11 | 690147 |
12 | 3156112 |
13 | 14465746 |
14 | 66409493 |
15 | 305232025 |
16 | 1404129530 |
17 | 6463476538 |
18 | 29767212095 |
19 | 137142651679 |
20 | 632021380433 |
21 | 2913316615372 |
22 | 13431328632593 |
23 | 61931182541194 |
24 | 285592218851606 |
25 | 1317104663887309 |
26 | 6074682489939359 |
27 | 28018852961838675 |
28 | 129239701278757210 |
[1,2,6,22,89,379,1661,7405,33367,151398,690147, 3156112,14465746,66409493,305232025,1404129530, 6463476538,29767212095,137142651679,632021380433, 2913316615372,13431328632593,61931182541194, 285592218851606,1317104663887309,6074682489939359, 28018852961838675,129239701278757210] |