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A287688 as a simple table

na(n)
12
26
37
410
515
613
715
821
928
1022
1121
1228
1336
1445
1532
1628
1736
1845
1955
2066
2145
2236
2345
2455
2566
2678
2791
2859
2945
3055
3166
3278
3391
34105
35120
3676
3755
3866
3978
4091
41105
42120
43136
44153
4594
4666
4778
4891
49105
50120
51136
52153
53171
54190
55115
5678
5791
58105
59120
60136
61153
62171
63190
64210
65231
66137

[2,6,7,10,15,13,15,21,28,22,21,28,36,45,32,28,36,
 45,55,66,45,36,45,55,66,78,91,59,45,55,66,78,91,
 105,120,76,55,66,78,91,105,120,136,153,94,66,78,
 91,105,120,136,153,171,190,115,78,91,105,120,136,
 153,171,190,210,231,137]