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A042912 as a simple table

na(n)
031
163
2220
3943
41163
524203
6146381
7170584
82534557
92705141
1018765403
11378013201
12396778604
131965127617
146292161455
1514549450527
16908358094129
171831265638785
186402155010484
1927439885680721

[31,63,220,943,1163,24203,146381,170584,2534557,
 2705141,18765403,378013201,396778604,1965127617,
 6292161455,14549450527,908358094129,1831265638785,
 6402155010484,27439885680721]