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A115871 as a simple table

na(n)
11
22
33
44
55
66
77
83
98
109
1110
1211
137
1412
1513
165
1714
186
1915
2016
2117
2218
2319
2415
2520
2621
2713
2822
2914
3023
3119
3215
3324
3425
359
3626
3710
3827
3915
4028
4112
4229
4321
4413
4530
4631
4727
4811
4932
5033
5134
5235
5331
5436
5537
5629
5738
5830
5939
6035
6140
6241
6325
6442
6526
6643
6727
6844
6928
7045
7146
7238
7330
7447
7527

[1,2,3,4,5,6,7,3,8,9,10,11,7,12,13,5,14,6,15,16,
 17,18,19,15,20,21,13,22,14,23,19,15,24,25,9,26,10,
 27,15,28,12,29,21,13,30,31,27,11,32,33,34,35,31,
 36,37,29,38,30,39,35,40,41,25,42,26,43,27,44,28,
 45,46,38,30,47,27]