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A076319
as a simple table
n
a(n)
1
1
2
2
3
4
4
11
5
34
6
156
7
1044
8
12345
9
274659
10
12004993
11
1018989417
[1,2,4,11,34,156,1044,12345,274659,12004993, 1018989417]
