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A248524 as a simple table

na(n)
13
26
39
412
515
618
722
825
928
1031
1134
1237
1340
1444
1547
1650
1753
1856
1959
2063
2166
2269
2372
2475
2578
2681
2785
2888
2991
3094
3197
32100
33104
34107
35110
36113
37116
38119
39122
40126
41129
42132
43135
44138
45141
46145
47148
48151
49154
50157
51160
52163
53167
54170
55173
56176
57179
58182

[3,6,9,12,15,18,22,25,28,31,34,37,40,44,47,50,53,
 56,59,63,66,69,72,75,78,81,85,88,91,94,97,100,104,
 107,110,113,116,119,122,126,129,132,135,138,141,
 145,148,151,154,157,160,163,167,170,173,176,179,
 182]