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A299973 as a simple table

na(n)
11
22
311
412
518
65
78
815
916
107
116
1217
1313
1410
153
1620
1714
189
194
2019
2124
2229
2334
2439
2544
2649
2754
2859
2964
3066
3127
3226
3337
3436
3547
3646
3757
3856
3967
4063
4130
4223
4340
4433
4550
4643
4760
4853
4970
5061
5122

[1,2,11,12,18,5,8,15,16,7,6,17,13,10,3,20,14,9,4,
 19,24,29,34,39,44,49,54,59,64,66,27,26,37,36,47,
 46,57,56,67,63,30,23,40,33,50,43,60,53,70,61,22]