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A177877 as a simple table

na(n)
01
12
24
33
47
510
64
710
816
920
105
1113
1222
1330
1435
156
1616
1728
1840
1950
2056
217
2219
2334
2450
2565
2677
2784
288
2922
3040
3160
3280
3398
34112
35120
369
3725
3846
3970
4095
41119
42140
43156
44165
4510
4628
4752
4880
49110
50140
51168
52192
53210
54220

[1,2,4,3,7,10,4,10,16,20,5,13,22,30,35,6,16,28,40,
 50,56,7,19,34,50,65,77,84,8,22,40,60,80,98,112,
 120,9,25,46,70,95,119,140,156,165,10,28,52,80,110,
 140,168,192,210,220]