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A033983 as a simple table

na(n)
11
213
3481
444669
51237231339
61546675117
762823773963
8284876771881
91119485807557
1026598440989093

[1,13,481,44669,1237231339,1546675117,62823773963,
 284876771881,1119485807557,26598440989093]