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A303550 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1111
1212
1313
1414
1516
1617
1718
1819
1920
2027
2133
2234
2335
2436
2538
2641
2750
2856
2957
3064
3166
3269
3375
3481
3585
3686
3790
3893
3998
40103
41106
42119
43121
44133
45136
46141
47143
48146
49150
50181
51182
52189
53195
54202
55207
56208
57212
58215
59218
60219
61225

[1,2,3,4,5,6,7,8,9,10,11,12,13,14,16,17,18,19,20,
 27,33,34,35,36,38,41,50,56,57,64,66,69,75,81,85,
 86,90,93,98,103,106,119,121,133,136,141,143,146,
 150,181,182,189,195,202,207,208,212,215,218,219,
 225]