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A141389 as a simple table

na(n)
12
24
39
47
512
61
75
86
911
1013
1115
128
133
1418
1521
1610
1716
1825
1924
2027
2120
2229
2314
2430
2526
2619
2728
2835
2932
3033
3122
3238
3317
3437
3536
3642
3723
3834
3941
4047
4143
4239
4346
4431
4540
4645
4754
4855
4951
5057
5158
5244
5352
5456
5549
5650
5760
5853
5965
6066
6159
6268
6363
6448
6571
6662
6770
6874
6969
7073
7177
7264
7376
7478
7561
7679
7781
7882
7985
8086

[2,4,9,7,12,1,5,6,11,13,15,8,3,18,21,10,16,25,24,
 27,20,29,14,30,26,19,28,35,32,33,22,38,17,37,36,
 42,23,34,41,47,43,39,46,31,40,45,54,55,51,57,58,
 44,52,56,49,50,60,53,65,66,59,68,63,48,71,62,70,
 74,69,73,77,64,76,78,61,79,81,82,85,86]