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A212974 as a simple table

na(n)
00
14
215
337
475
5132
6212
7320
8459
9633
10847
111104
121408
131764
142175
152645
163179
173780
184452
195200
206027
216937
227935
239024
2410208
2511492
2612879
2714373
2815979
2917700
3019540
3121504
3223595
3325817
3428175
3530672
3633312
3736100
3839039
3942133

[0,4,15,37,75,132,212,320,459,633,847,1104,1408,
 1764,2175,2645,3179,3780,4452,5200,6027,6937,7935,
 9024,10208,11492,12879,14373,15979,17700,19540,
 21504,23595,25817,28175,30672,33312,36100,39039,
 42133]