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A291604 as a simple table

na(n)
11
22
33
46
54
68
75
87
99
1010
1111
1222
1312
1418
1513
1619
1714
1823
1915
2024
2120
2225
2316
2428
2517
2626
2721
2827
2929
3030
3131
3232
3333
3434
3538
3635
3736
3840
3937
4041
4139
4258
4342
4443
4550
4659
4744
4862
4945
5063
5148
5266
5346
5472
5547
5667
5749
5873
5951
6078
6152
6274
6353
6475
6554
6676
6755

[1,2,3,6,4,8,5,7,9,10,11,22,12,18,13,19,14,23,15,
 24,20,25,16,28,17,26,21,27,29,30,31,32,33,34,38,
 35,36,40,37,41,39,58,42,43,50,59,44,62,45,63,48,
 66,46,72,47,67,49,73,51,78,52,74,53,75,54,76,55]