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A158699 as a simple table

na(n)
00
11
22
33
44
55
66
77
88
99
1010
1121
1232
1343
1454
1565
1676
1787
1898
19109
20210
21321
22432
23543
24654
25765
26876
27987
281098
292109
303210
314321
325432
336543
347654
358765
369876
3710987
3821098
3932109
4043210
4154321
4265432
4376543
4487654
4598765
46109876
47210987
48321098
49432109
50543210

[0,1,2,3,4,5,6,7,8,9,10,21,32,43,54,65,76,87,98,
 109,210,321,432,543,654,765,876,987,1098,2109,
 3210,4321,5432,6543,7654,8765,9876,10987,21098,
 32109,43210,54321,65432,76543,87654,98765,109876,
 210987,321098,432109,543210]