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A079673 as a simple table

na(n)
11
21
32
41
51
63
72
81
94
101
112
121
133
145
151
162
176
181
194
201
213
227
232
241
258
261
275
282
291
303
319
324
331
342
356
3610
371
381
393
4011
412
421
435
447
454
4612
471
482
491
503
5113
528
531
542
556
5614
571
584
591
603
615
629
6315
642
651
6616
671
687
692
7010
711
723
7317
744
751
762
776
7818
791
805
8111
828
831
843
8519
862
871
884
8912
9020
911
922
931
943
957
969
9721
981

[1,1,2,1,1,3,2,1,4,1,2,1,3,5,1,2,6,1,4,1,3,7,2,1,
 8,1,5,2,1,3,9,4,1,2,6,10,1,1,3,11,2,1,5,7,4,12,1,
 2,1,3,13,8,1,2,6,14,1,4,1,3,5,9,15,2,1,16,1,7,2,
 10,1,3,17,4,1,2,6,18,1,5,11,8,1,3,19,2,1,4,12,20,
 1,2,1,3,7,9,21,1]