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A123797
as a simple table
n
a(n)
1
1
2
1
3
7
4
10
5
88
6
142
7
1277
8
2193
9
19967
10
35449
11
325809
12
593589
13
5473435
14
10159187
15
93929982
16
176846933
[1,1,7,10,88,142,1277,2193,19967,35449,325809, 593589,5473435,10159187,93929982,176846933]