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A181648 as a simple table

na(n)
01
11
21
32
42
53
61
72
83
92
104
113
123
133
144
153
162
172
186
195
203
215
223
235
244
255
263
274
285
294
305
314
325
337
346
357
363
373
387
394
408
414
424
435
447
456
465
476
487
498
506
514
526
539
546
558
566
574
584
594
6011
617
624
6311
644
659
666
677
688
697
7011
715
725
738
748
7510
766
775
7810
796
808
816
827
837
848

[1,1,1,2,2,3,1,2,3,2,4,3,3,3,4,3,2,2,6,5,3,5,3,5,
 4,5,3,4,5,4,5,4,5,7,6,7,3,3,7,4,8,4,4,5,7,6,5,6,7,
 8,6,4,6,9,6,8,6,4,4,4,11,7,4,11,4,9,6,7,8,7,11,5,
 5,8,8,10,6,5,10,6,8,6,7,7,8]