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A308897 as a simple table

na(n)
11
22
31
42
53
64
71
83
94
102
113
124
131
143
154
162
175
186
197
208
211
225
236
247
258
262
275
286
297
308
311
325
336
347
358
362
373
386
395
408
417
424
431
443
456
465
478
487
494
502
513
526
535
548
557
564
571
583
596
605
618
627
634
642
659
6610
6711
6812
6913
7014
7115
7216
731
749
7510
7611
7712
7813
7914
8015
8116
822

[1,2,1,2,3,4,1,3,4,2,3,4,1,3,4,2,5,6,7,8,1,5,6,7,
 8,2,5,6,7,8,1,5,6,7,8,2,3,6,5,8,7,4,1,3,6,5,8,7,4,
 2,3,6,5,8,7,4,1,3,6,5,8,7,4,2,9,10,11,12,13,14,15,
 16,1,9,10,11,12,13,14,15,16,2]