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A006968 as a simple table

na(n)
11
22
33
42
51
62
73
84
92
101
112
123
134
143
152
163
174
185
193
202
213
224
235
244
253
264
275
286
294
303
314
325
336
345
354
365
376
387
395
402
413
424
435
444
453
464
475
486
494
501
512
523
534
543
552
563
574
585
593
602
613
624
635
644
653
664
675
686
694
703
714
725
736
745
754
765
776
787
795
804
815
826
837
846
855
866
877
888
896
902
913
924
935
944
953
964
975
986
994
1001
1012
1023
1034
1043
1052

[1,2,3,2,1,2,3,4,2,1,2,3,4,3,2,3,4,5,3,2,3,4,5,4,
 3,4,5,6,4,3,4,5,6,5,4,5,6,7,5,2,3,4,5,4,3,4,5,6,4,
 1,2,3,4,3,2,3,4,5,3,2,3,4,5,4,3,4,5,6,4,3,4,5,6,5,
 4,5,6,7,5,4,5,6,7,6,5,6,7,8,6,2,3,4,5,4,3,4,5,6,4,
 1,2,3,4,3,2]