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A030625 as a simple table

na(n)
00
12
26
312
424
540
672
7126
8240
9459
10940
111936
124104
138671
1418508
1539300
1683616
17177055
18374652
19789811
201662400
213488877
227309588
2315279406
2431886928
2566422275
26138157708
27286924599
28595102144
291232672869

[0,2,6,12,24,40,72,126,240,459,940,1936,4104,8671,
 18508,39300,83616,177055,374652,789811,1662400,
 3488877,7309588,15279406,31886928,66422275,
 138157708,286924599,595102144,1232672869]