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A133188 as a simple table

na(n)
10
20
31
40
51
61
71
81
91
101
112
121
131
142
152
161
173
182
191
203
213
221
234
243
251
264
274
281
295
304
311
325
335
341
356
365
371
386
396
401
417
426
431
447
457
461
478
487
491
508
518
521
539
548
551
569
579
581
5910
609
611
6210
6310
641
6511
6610
671
6811
6911
701
7112
7211
731
7412
7512
761
7713
7812
791
8013
8113
821
8314
8413
851
8614
8714
881
8915
9014
911
9215
9315

[0,0,1,0,1,1,1,1,1,1,2,1,1,2,2,1,3,2,1,3,3,1,4,3,
 1,4,4,1,5,4,1,5,5,1,6,5,1,6,6,1,7,6,1,7,7,1,8,7,1,
 8,8,1,9,8,1,9,9,1,10,9,1,10,10,1,11,10,1,11,11,1,
 12,11,1,12,12,1,13,12,1,13,13,1,14,13,1,14,14,1,
 15,14,1,15,15]