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A051891 as a simple table

na(n)
12
23
36
410
515
651
7175
8261
9285
10286
11331
12546
13745
141135
151171
161275
171330
181365
191366
202025
212640
223180
233436
243780
254116
264861
275860
285890
296036
306670
318646
328961
338980
349715
359945
3610116
3710180
3815771
3916590
4016876
4119326
4220215
4320266
4421451

[2,3,6,10,15,51,175,261,285,286,331,546,745,1135,
 1171,1275,1330,1365,1366,2025,2640,3180,3436,3780,
 4116,4861,5860,5890,6036,6670,8646,8961,8980,9715,
 9945,10116,10180,15771,16590,16876,19326,20215,
 20266,21451]