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A053833 as a simple table

na(n)
00
11
22
33
44
55
66
77
88
99
1010
1111
1212
131
142
153
164
175
186
197
208
219
2210
2311
2412
2513
262
273
284
295
306
317
328
339
3410
3511
3612
3713
3814
393
404
415
426
437
448
459
4610
4711
4812
4913
5014
5115
524
535
546
557
568
579
5810
5911
6012
6113
6214
6315
6416
655
666
677
688
699
7010
7111
7212
7313
7414
7515
7616
7717
786
797
808
819
8210
8311
8412

[0,1,2,3,4,5,6,7,8,9,10,11,12,1,2,3,4,5,6,7,8,9,
 10,11,12,13,2,3,4,5,6,7,8,9,10,11,12,13,14,3,4,5,
 6,7,8,9,10,11,12,13,14,15,4,5,6,7,8,9,10,11,12,13,
 14,15,16,5,6,7,8,9,10,11,12,13,14,15,16,17,6,7,8,
 9,10,11,12]