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A172212 as a simple table

na(n)
11
212
336
4100
5233
6456
7796
81280
91935
102788
113866
125196
136805
148720
1510968
1613576
1716571
1819980
1923830
2028148
2132961
2238296
2344180
2450640
2557703
2665396
2773746
2882780
2992525
30103008
31114256
32126296
33139155
34152860
35167438
36182916
37199321

[1,12,36,100,233,456,796,1280,1935,2788,3866,5196,
 6805,8720,10968,13576,16571,19980,23830,28148,
 32961,38296,44180,50640,57703,65396,73746,82780,
 92525,103008,114256,126296,139155,152860,167438,
 182916,199321]