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A081354 as a simple table

na(n)
12
24
35
46
58
612
713
814
915
1016
1117
1218
1322
1424
1528
1629
1732
1835
1936
2037
2138
2239
2341
2442
2544
2645
2746
2848
2950
3051
3153
3254
3355
3456
3561
3662
3764
3866
3972
4073
4176
4284
4386
4487
4588
4689
4791
4892
4994
5095
5196
5297
5398
54100
55101
56105
57108
58109
59111
60112
61113
62114
63115
64117
65118
66119
67123

[2,4,5,6,8,12,13,14,15,16,17,18,22,24,28,29,32,35,
 36,37,38,39,41,42,44,45,46,48,50,51,53,54,55,56,
 61,62,64,66,72,73,76,84,86,87,88,89,91,92,94,95,
 96,97,98,100,101,105,108,109,111,112,113,114,115,
 117,118,119,123]