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A117968 as a simple table

na(n)
12
27
36
48
522
621
723
819
918
1020
1125
1224
1326
1467
1566
1668
1764
1863
1965
2070
2169
2271
2358
2457
2559
2655
2754
2856
2961
3060
3162
3276
3375
3477
3573
3672
3774
3879
3978
4080
41202
42201
43203
44199
45198
46200
47205
48204
49206
50193
51192
52194
53190
54189
55191
56196
57195
58197
59211
60210
61212
62208
63207

[2,7,6,8,22,21,23,19,18,20,25,24,26,67,66,68,64,
 63,65,70,69,71,58,57,59,55,54,56,61,60,62,76,75,
 77,73,72,74,79,78,80,202,201,203,199,198,200,205,
 204,206,193,192,194,190,189,191,196,195,197,211,
 210,212,208,207]