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A081350 as a simple table

na(n)
01
12
23
34
415
516
635
736
863
964
1099
11100
12143
13144
14195
15196
16255
17256
18323
19324
20399
21400
22483
23484
24575
25576
26675
27676
28783
29784
30899
31900
321023
331024
341155
351156
361295
371296
381443
391444
401599
411600
421763
431764
441935
451936
462115
472116
482303
492304
502499

[1,2,3,4,15,16,35,36,63,64,99,100,143,144,195,196,
 255,256,323,324,399,400,483,484,575,576,675,676,
 783,784,899,900,1023,1024,1155,1156,1295,1296,
 1443,1444,1599,1600,1763,1764,1935,1936,2115,2116,
 2303,2304,2499]