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A120198 as a simple table

na(n)
15
26
36
47
58
69
710
811
913
1014
1116
1218
1320
1423
1526
1629
1733
1837
1941
2047
2152
2259
2366
2475
2584
2694
27106
28119
29134
30151
31170
32191
33215
34242
35272
36306
37344
38387
39436
40490

[5,6,6,7,8,9,10,11,13,14,16,18,20,23,26,29,33,37,
 41,47,52,59,66,75,84,94,106,119,134,151,170,191,
 215,242,272,306,344,387,436,490]