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A241307 as a simple table

na(n)
15
26
315
425
540
689
7121
8237
9390
10682
111250
122069
133698
146352
1511013
1619408
1733478
1858524
19101542
20176797
21307761
22535313
23932344
241620570
252821554
264908976
278540842
2814866293
2925861744
3045006289
3178311151
32136266311
33237120535

[5,6,15,25,40,89,121,237,390,682,1250,2069,3698,
 6352,11013,19408,33478,58524,101542,176797,307761,
 535313,932344,1620570,2821554,4908976,8540842,
 14866293,25861744,45006289,78311151,136266311,
 237120535]