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A113004 as a simple table

na(n)
11
23
32
44
55
66
78
810
97
1012
1111
129
1314
1413
1515
1619
1718
1817
1916
2020
2123
2222
2326
2421
2525
2624
2728
2827
2933
3029
3131
3230
3336
3439
3537
3635
3732
3841
3934
4042
4145
4238
4344
4443
4540
4651
4747
4846
4950
5060
5149
5248
5352
5453
5554
5657
5756
5855
5964
6058
6163
6262
6361
6459
6566
6665
6770
6872
6969
7068
7167
7271

[1,3,2,4,5,6,8,10,7,12,11,9,14,13,15,19,18,17,16,
 20,23,22,26,21,25,24,28,27,33,29,31,30,36,39,37,
 35,32,41,34,42,45,38,44,43,40,51,47,46,50,60,49,
 48,52,53,54,57,56,55,64,58,63,62,61,59,66,65,70,
 72,69,68,67,71]