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A031007 as a simple table

na(n)
00
11
22
33
44
55
66
70
81
91
101
112
121
133
141
154
161
175
181
196
201
210
222
231
242
252
262
273
282
294
302
315
322
336
342
350
363
371
383
392
403
413
423
434
443
455
463
476
483
490
504
511
524
532
544
553
564
574
584
595
604
616
624
630
645
651
665
672
685
693
705
714
725
735
745
756
765
770
786
791
806
812
826
833
846
854
866
875
886
896
906

[0,1,2,3,4,5,6,0,1,1,1,2,1,3,1,4,1,5,1,6,1,0,2,1,
 2,2,2,3,2,4,2,5,2,6,2,0,3,1,3,2,3,3,3,4,3,5,3,6,3,
 0,4,1,4,2,4,3,4,4,4,5,4,6,4,0,5,1,5,2,5,3,5,4,5,5,
 5,6,5,0,6,1,6,2,6,3,6,4,6,5,6,6,6]