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A251604 as a simple table

na(n)
11
22
33
45
54
69
713
86
919
1010
1129
1212
1341
1453
158
1661
1715
1814
1987
20101
2116
2221
2337
2418
2511
2658
2723
2824
2947
3071
3120
327
3327
3417
3522
3639
37122
3835
39157
4026
4133
4259
4328
4445
4573
4630
47103
4838
4951
5089
5125
5232
5357
54178
5555
56233
5734
5863
5997
6036
6149
6240
63267
64307
6542

[1,2,3,5,4,9,13,6,19,10,29,12,41,53,8,61,15,14,87,
 101,16,21,37,18,11,58,23,24,47,71,20,7,27,17,22,
 39,122,35,157,26,33,59,28,45,73,30,103,38,51,89,
 25,32,57,178,55,233,34,63,97,36,49,40,267,307,42]