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A187187 as a simple table

na(n)
11
21
31
41
51
61
71
81
91
102
112
122
132
142
152
162
172
182
193
203
213
224
233
243
253
264
273
283
293
304
314
324
334
344
354
364
375
385
395
405
415
425
435
445
455
466
476
486
497
506
516
526
537
546
556
566
577
587
597
607
617
627
637
648
658
668
678
688
698
708
718
728
739
7410
759
7610
779
7810
799
8010
819
8210
839
8410
859
8610
879
8810
899
9010
9111
9211
9311
9411
9511
9611
9711
9811
9911
10012
10112
10212
10313
10412
10512
10612
10713
10812
10912
11012
11113
11213
11313
11413
11513
11613
11713
11814
11914
12014

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