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A076437 as a simple table

na(n)
11
22
33
45
56
67
78
810
912
1013
1115
1217
1318
1420
1521
1622
1725
1826
1927
2028
2131
2236
2337
2438
2540
2641
2742
2843
2945
3046
3148
3251
3352
3453
3555
3656
3757
3858
3960
4063
4166
4268
4370
4472
4573
4675
4776
4877
4978
5080

[1,2,3,5,6,7,8,10,12,13,15,17,18,20,21,22,25,26,
 27,28,31,36,37,38,40,41,42,43,45,46,48,51,52,53,
 55,56,57,58,60,63,66,68,70,72,73,75,76,77,78,80]