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A293884 as a simple table

na(n)
31
44
516
653
7173
8532
91615
104785
1114066
1240908
13118438
14341253
15981200
162815762
178075265
1823149097
1966373778
20190376443
21546401592
221569387414
234511532695
2412980998062
2537385342522
26107771434819
27310967929569
28898108427259
292596180252466
307511411442182

[1,4,16,53,173,532,1615,4785,14066,40908,118438,
 341253,981200,2815762,8075265,23149097,66373778,
 190376443,546401592,1569387414,4511532695,
 12980998062,37385342522,107771434819,310967929569,
 898108427259,2596180252466,7511411442182]