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A053281 as a simple table

na(n)
01
12
22
33
44
54
66
77
88
910
1012
1114
1216
1320
1422
1526
1631
1734
1840
1946
2052
2160
2268
2376
2487
2598
26110
27124
28140
29156
30174
31196
32216
33242
34270
35298
36332
37368
38406
39449
40496
41546
42602
43664
44728
45800
46880
47962
481056
491156
501262
511381
521508
531644
541794
551956
562128

[1,2,2,3,4,4,6,7,8,10,12,14,16,20,22,26,31,34,40,
 46,52,60,68,76,87,98,110,124,140,156,174,196,216,
 242,270,298,332,368,406,449,496,546,602,664,728,
 800,880,962,1056,1156,1262,1381,1508,1644,1794,
 1956,2128]