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A262239
as a simple table
n
a(n)
1
12
2
31
3
238
4
1306
5
10747
6
77490
7
778464
8
4345849
9
31098659
10
251964601
11
2327886878
[12,31,238,1306,10747,77490,778464,4345849, 31098659,251964601,2327886878]