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n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 23 |
4 | 86 |
5 | 324 |
6 | 1299 |
7 | 5248 |
8 | 21775 |
9 | 91053 |
10 | 386100 |
11 | 1650934 |
12 | 7124220 |
13 | 30968386 |
14 | 135455089 |
15 | 595865245 |
16 | 2633401172 |
17 | 11691086039 |
18 | 52101621996 |
19 | 233046312802 |
20 | 1045751149946 |
21 | 4706689810491 |
22 | 21241503177894 |
23 | 96104232133673 |
24 | 435826985828029 |
25 | 1980691355824627 |
26 | 9019785417646572 |
27 | 41151396449899485 |
[1,2,7,23,86,324,1299,5248,21775,91053,386100, 1650934,7124220,30968386,135455089,595865245, 2633401172,11691086039,52101621996,233046312802, 1045751149946,4706689810491,21241503177894, 96104232133673,435826985828029,1980691355824627, 9019785417646572,41151396449899485] |