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A142972 as a simple table

na(n)
13
25
33
45
54
65
73
85
99
103
119
125
133
145
158
169
176
189
195
204
217
225
238
2410
255
263
275
284
295
3015
315
329
333
3414
353
369
3710
385
3910
408
416
4211
434
445
453
4617
4713
485
494
505
517
526
5311
549
557
568
573
588
595
603
6113
6221
635
644
655
6620
679
6811
694
705
717
7215
7310
749
755
769
7715
785
799
8011
817
8211
834
847
855
868
8713
885
893
905
9114
9213
935
949
955

[3,5,3,5,4,5,3,5,9,3,9,5,3,5,8,9,6,9,5,4,7,5,8,10,
 5,3,5,4,5,15,5,9,3,14,3,9,10,5,10,8,6,11,4,5,3,17,
 13,5,4,5,7,6,11,9,7,8,3,8,5,3,13,21,5,4,5,20,9,11,
 4,5,7,15,10,9,5,9,15,5,9,11,7,11,4,7,5,8,13,5,3,5,
 14,13,5,9,5]