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A006331 as a simple table

na(n)
00
12
210
328
460
5110
6182
7280
8408
9570
10770
111012
121300
131638
142030
152480
162992
173570
184218
194940
205740
216622
227590
238648
249800
2511050
2612402
2713860
2815428
2917110
3018910
3120832
3222880
3325058
3427370
3529820
3632412
3735150
3838038
3941080
4044280

[0,2,10,28,60,110,182,280,408,570,770,1012,1300,
 1638,2030,2480,2992,3570,4218,4940,5740,6622,7590,
 8648,9800,11050,12402,13860,15428,17110,18910,
 20832,22880,25058,27370,29820,32412,35150,38038,
 41080,44280]