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A090972 as a simple table

na(n)
13
23
34
44
54
64
75
85
95
105
115
125
136
146
155
165
176
186
196
206
216
226
236
246
256
266
276
286
296
306
316
326
336
346
356
366
377
387
396
406
417
427
437
447
457
467
477
487
497
507
517
527
537
547
557
567
577
587
597
607
617
627
637
647
657
667
677
687
697
707
717
727
737
747
757
767
777
787
797
807
817
827
837
847
857
867
877
887
897
907
917
927
937
947
957
967
977
987
997
1007
1018
1028
1038
1048
1058

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