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A223958 as a simple table

na(n)
156
21876
336028
4594286
59779558
6163752797
72772658693
847273211674
9809416786834
1013894273785956
11238867008057298
124110191305837227
1370761275087518799
141218613301433676245
1520990363391641556709

[56,1876,36028,594286,9779558,163752797,
 2772658693,47273211674,809416786834,
 13894273785956,238867008057298,4110191305837227,
 70761275087518799,1218613301433676245,
 20990363391641556709]