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A118550 as a simple table

na(n)
01
12
24
35
49
514
615
716
817
926
1027
1128
1229
1330
1444
1559
1675
1792
1893
1994
2095
2196
2297
2398
2499
25100
26126
27153
28181
29210
30240
31241
32242
33243
34244
35245
36246
37247
38248
39249
40250
41251
42252
43253
44297
45298
46299
47300
48301
49302
50303
51304
52305
53306
54307
55308
56309
57310
58311

[1,2,4,5,9,14,15,16,17,26,27,28,29,30,44,59,75,92,
 93,94,95,96,97,98,99,100,126,153,181,210,240,241,
 242,243,244,245,246,247,248,249,250,251,252,253,
 297,298,299,300,301,302,303,304,305,306,307,308,
 309,310,311]