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A187978 as a simple table

na(n)
12
24
37
49
511
612
714
816
919
1021
1123
1224
1326
1428
1531
1633
1736
1838
1940
2041
2143
2245
2348
2450
2552
2653
2755
2857
2960
3062
3165
3267
3369
3470
3572
3674
3777
3879
3981
4082
4184
4286
4389
4491
4593
4694
4796
4898
49101
50103
51106
52108
53110
54111
55113
56115
57118
58120
59122
60123
61125
62127
63130
64132
65135
66137
67139
68140
69142
70144
71147
72149
73151
74152

[2,4,7,9,11,12,14,16,19,21,23,24,26,28,31,33,36,
 38,40,41,43,45,48,50,52,53,55,57,60,62,65,67,69,
 70,72,74,77,79,81,82,84,86,89,91,93,94,96,98,101,
 103,106,108,110,111,113,115,118,120,122,123,125,
 127,130,132,135,137,139,140,142,144,147,149,151,
 152]