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A161254 as a simple table

na(n)
01
11
22
32
44
54
66
77
810
911
1014
1117
1221
1324
1429
1534
1641
1746
1855
1962
2073
2181
2296
23107
24124
25137
26158
27175
28199
29221
30250
31276
32310
33343
34383
35421
36469
37516
38572
39626
40693
41757
42833
43908
441000
451088
461192
471294
481417
491535
501674
511813
521974
532133
542315
552501
562710
572921

[1,1,2,2,4,4,6,7,10,11,14,17,21,24,29,34,41,46,55,
 62,73,81,96,107,124,137,158,175,199,221,250,276,
 310,343,383,421,469,516,572,626,693,757,833,908,
 1000,1088,1192,1294,1417,1535,1674,1813,1974,2133,
 2315,2501,2710,2921]