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A066769 as a simple table

na(n)
11
23
35
49
510
621
720
839
949
1080
11100
12195
13246
14424
15650
161065
171614
182715
194200
206940
2111020
2217922
2328680
2446821
2575075
26121898
27196565
28318680
29514258
30833560
311346300
322180439
333524900
345706132
359227600
3614936241
3724157854
3839096588

[1,3,5,9,10,21,20,39,49,80,100,195,246,424,650,
 1065,1614,2715,4200,6940,11020,17922,28680,46821,
 75075,121898,196565,318680,514258,833560,1346300,
 2180439,3524900,5706132,9227600,14936241,24157854,
 39096588]