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A206331 as a simple table

na(n)
00
11
22
37
48
511
612
713
814
915
1016
1123
1224
1325
1426
1527
1628
1731
1832
1935
2036
2149
2250
2351
2452
2561
2662
2763
2864
2965
3066
3167
3268
3371
3472
3575
3676
3779
3880
3985
4086
4189
4290
4391
4492
4593
4694
4795
4896
4999
50100
51103
52104
53107
54108
55111
56112
57115
58116
59121
60122
61127
62128

[0,1,2,7,8,11,12,13,14,15,16,23,24,25,26,27,28,31,
 32,35,36,49,50,51,52,61,62,63,64,65,66,67,68,71,
 72,75,76,79,80,85,86,89,90,91,92,93,94,95,96,99,
 100,103,104,107,108,111,112,115,116,121,122,127,
 128]