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A253250 as a simple table

na(n)
12
23
34
43
54
64
74
84
96
104
116
125
134
145
154
167
175
186
195
205
216
225
237
245
255
266
275
285
298
305
316
328
336
347
356
366
378
385
396
407
415
426
436
446
456
467
479
485
498
505
516
527
536
545
554
569
579
586
596
606
618
628
636
646
6510
665
678
689
699
707
718
725
736
748
755
768
778
787
799
808
816
826
837
848
857
868
875
886
897
906
918
926
938
945
958
965
978
9810
999
10011
1018
1026

[2,3,4,3,4,4,4,4,6,4,6,5,4,5,4,7,5,6,5,5,6,5,7,5,
 5,6,5,5,8,5,6,8,6,7,6,6,8,5,6,7,5,6,6,6,6,7,9,5,8,
 5,6,7,6,5,4,9,9,6,6,6,8,8,6,6,10,5,8,9,9,7,8,5,6,
 8,5,8,8,7,9,8,6,6,7,8,7,8,5,6,7,6,8,6,8,5,8,5,8,
 10,9,11,8,6]