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A270533 as a simple table

na(n)
01
12
23
33
43
53
63
73
83
93
102
114
122
133
142
152
165
172
185
192
201
213
221
234
243
255
266
274
285
294
305
313
324
334
342
354
363
375
385
394
408
414
424
434
443
453
463
473
482
494
505
519
523
535
544
553
564
572
584
593
606
614
625
633
645
654
665
674
684
692
701
716
722
737
742
757
765
772
785
794
803
815
824
833
845
853
866
871
887
894
904

[1,2,3,3,3,3,3,3,3,3,2,4,2,3,2,2,5,2,5,2,1,3,1,4,
 3,5,6,4,5,4,5,3,4,4,2,4,3,5,5,4,8,4,4,4,3,3,3,3,2,
 4,5,9,3,5,4,3,4,2,4,3,6,4,5,3,5,4,5,4,4,2,1,6,2,7,
 2,7,5,2,5,4,3,5,4,3,5,3,6,1,7,4,4]