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A191475 as a simple table

na(n)
11
22
31
43
52
64
71
83
95
102
114
121
136
143
155
162
177
184
191
206
213
228
235
242
257
264
271
289
296
303
318
325
332
3410
357
364
371
389
396
403
4111
428
435
442
4510
467
474
4812
491
509
516
523
5311
548
555
5613
572
5810
597
604
6112
621
639
646
6514
663
6711
688
695
7013
712
7210
737
7415
754
7612
771
789
796
8014
813
8211

[1,2,1,3,2,4,1,3,5,2,4,1,6,3,5,2,7,4,1,6,3,8,5,2,
 7,4,1,9,6,3,8,5,2,10,7,4,1,9,6,3,11,8,5,2,10,7,4,
 12,1,9,6,3,11,8,5,13,2,10,7,4,12,1,9,6,14,3,11,8,
 5,13,2,10,7,15,4,12,1,9,6,14,3,11]