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A032520 as a simple table

na(n)
00
11
22
33
44
55
66
77
88
99
1010
1111
1212
1313
1414
1515
1616
1717
1818
1919
2020
2122
2224
2326
2428
2530
2632
2734
2836
2938
3040
3142
3244
3346
3448
3550
3652
3754
3856
3958
4060
4162
4264
4366
4468
4570
4672
4774
4876
4978
5080
5182
5284
5386
5488
5590
5692
5794
5896
5998
60100
61102
62104
63106
64108
65110
66112
67114
68116

[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
 19,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,
 50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,
 82,84,86,88,90,92,94,96,98,100,102,104,106,108,
 110,112,114,116]