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A061061 as a simple table

na(n)
10
20
31
43
56
612
720
831
946
1064
1187
12115
13147
14186
15231
16282
17342
18408
19482
20566
21657
22759
23871
24991
251126
261270
271424
281594
291774
301968
312177
322397
332635
342887
353151
363436
373735
384050
394386
404736
415106
425496
435901
446330
456778
467244
477737
488247
498778
509336

[0,0,1,3,6,12,20,31,46,64,87,115,147,186,231,282,
 342,408,482,566,657,759,871,991,1126,1270,1424,
 1594,1774,1968,2177,2397,2635,2887,3151,3436,3735,
 4050,4386,4736,5106,5496,5901,6330,6778,7244,7737,
 8247,8778,9336]