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A093387 as a simple table

na(n)
10
20
31
42
56
612
729
858
9130
10260
11562
121124
132380
144760
159949
1619898
1741226
1882452
19169766
20339532
21695860
221391720
232842226
245684452
2511576916
2623153832
2747050564
2894101128
29190876696
30381753392
31773201629
321546403258
333128164186
346256328372
3512642301534

[0,0,1,2,6,12,29,58,130,260,562,1124,2380,4760,
 9949,19898,41226,82452,169766,339532,695860,
 1391720,2842226,5684452,11576916,23153832,
 47050564,94101128,190876696,381753392,773201629,
 1546403258,3128164186,6256328372,12642301534]