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A028195 as a simple table

na(n)
01
136
2825
315380
4254721
53910596
656993545
7800115060
810923586641
9145981963556
101918518760665
1124879137417940
12319158529241761
134058064014390916
1451218264422582185
15642449405949396020

[1,36,825,15380,254721,3910596,56993545,800115060,
 10923586641,145981963556,1918518760665,
 24879137417940,319158529241761,4058064014390916,
 51218264422582185,642449405949396020]