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A307275 as a simple table

na(n)
01
15
213
327
446
570
699
7135
8179
9227
10281
11339
12408
13476
14553
15633
16727
17815
18915
191017
201136
211244
221367
231491
241635
251763
261909
272055
282224
292372
302541
312709
322903
333071
343263
353453
363672
373860
384075
394287
404531
414739
424977
435211
445480
455708
465969
476225

[1,5,13,27,46,70,99,135,179,227,281,339,408,476,
 553,633,727,815,915,1017,1136,1244,1367,1491,1635,
 1763,1909,2055,2224,2372,2541,2709,2903,3071,3263,
 3453,3672,3860,4075,4287,4531,4739,4977,5211,5480,
 5708,5969,6225]