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A041026 as a simple table

na(n)
04
117
2140
3577
44756
519601
6161564
7665857
85488420
922619537
10186444716
11768398401
126333631924
1326102926097
14215157040700
15886731088897
167309005751876
1730122754096401
18248291038523084

[4,17,140,577,4756,19601,161564,665857,5488420,
 22619537,186444716,768398401,6333631924,
 26102926097,215157040700,886731088897,
 7309005751876,30122754096401,248291038523084]