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A020747 as a simple table

na(n)
04
16
29
313
418
524
632
742
855
972
1094
11122
12158
13204
14263
15339
16436
17560
18719
19923
201184
211518
221946
232494
243196
254095
265246
276720
288608
2911026
3014123
3118089
3223168
3329673
3438004
3548674
3662339
3779840
38102254
39130960
40167724
41214808
42275109
43352337
44451244
45577915

[4,6,9,13,18,24,32,42,55,72,94,122,158,204,263,
 339,436,560,719,923,1184,1518,1946,2494,3196,4095,
 5246,6720,8608,11026,14123,18089,23168,29673,
 38004,48674,62339,79840,102254,130960,167724,
 214808,275109,352337,451244,577915]