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A247953 as a simple table

na(n)
12
23
36
411
512
614
715
820
930
1060
1168
1275
13108
14116
15135
16206
17210
18410
19446
20558
21851
221482
231499
242039
252051
264196
277046
287155
298735
3010619
3118420
3220039
3346719
3475348
35179790
36203018
37434246

[2,3,6,11,12,14,15,20,30,60,68,75,108,116,135,206,
 210,410,446,558,851,1482,1499,2039,2051,4196,7046,
 7155,8735,10619,18420,20039,46719,75348,179790,
 203018,434246]