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A047311 as a simple table

na(n)
14
25
36
411
512
613
718
819
920
1025
1126
1227
1332
1433
1534
1639
1740
1841
1946
2047
2148
2253
2354
2455
2560
2661
2762
2867
2968
3069
3174
3275
3376
3481
3582
3683
3788
3889
3990
4095
4196
4297
43102
44103
45104
46109
47110
48111
49116
50117
51118
52123
53124
54125
55130
56131
57132
58137
59138
60139
61144

[4,5,6,11,12,13,18,19,20,25,26,27,32,33,34,39,40,
 41,46,47,48,53,54,55,60,61,62,67,68,69,74,75,76,
 81,82,83,88,89,90,95,96,97,102,103,104,109,110,
 111,116,117,118,123,124,125,130,131,132,137,138,
 139,144]