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A297602 as a simple table

na(n)
17
235
3181
4953
54997
626155
7137033
8717905
93760657
1019700359
11103201589
12540625665
132832090849
1414836035579
1577719229889
16407135626281
172132798039801
1811172757117047
1958528983567693
20306606675825193
211606172667510097

[7,35,181,953,4997,26155,137033,717905,3760657,
 19700359,103201589,540625665,2832090849,
 14836035579,77719229889,407135626281,
 2132798039801,11172757117047,58528983567693,
 306606675825193,1606172667510097]