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A280738 as a simple table

na(n)
11
21
32
41
53
62
71
85
92
103
111
127
132
141
1511
162
173
185
192
203
217
222
2313
241
2517
262
2715
281
2919
302
311
3223
332
343
351
365
377
386
391
4029
412
425
4311
443
4513
462
4711
487
491
5031
512
525
5313
546
551
5637
572
587
593
6017
612
6215
631
6441
652
661
6743
682
6933
701
7147
722
7335
743
7519
762
773
7823
792
805

[1,1,2,1,3,2,1,5,2,3,1,7,2,1,11,2,3,5,2,3,7,2,13,
 1,17,2,15,1,19,2,1,23,2,3,1,5,7,6,1,29,2,5,11,3,
 13,2,11,7,1,31,2,5,13,6,1,37,2,7,3,17,2,15,1,41,2,
 1,43,2,33,1,47,2,35,3,19,2,3,23,2,5]