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A121578 as a simple table

na(n)
10
212
324
436
548
660
772
884
996
10108
11120
12132
131
1413
1525
1637
1749
1861
1973
2085
2197
22109
23121
24133
252
2614
2726
2838
2950
3062
3174
3286
3398
34110
35122
36134
373
3815
3927
4039
4151
4263
4375
4487
4599
46111
47123
48135
494
5016
5128
5240
5352
5464
5576
5688
57100
58112
59124
60136
615
6217
6329
6441
6553
6665

[0,12,24,36,48,60,72,84,96,108,120,132,1,13,25,37,
 49,61,73,85,97,109,121,133,2,14,26,38,50,62,74,86,
 98,110,122,134,3,15,27,39,51,63,75,87,99,111,123,
 135,4,16,28,40,52,64,76,88,100,112,124,136,5,17,
 29,41,53,65]