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A381966 as a simple table

na(n)
00
11
22
33
44
55
66
77
88
99
1010
1112
1214
1316
1418
1520
1622
1724
1826
1928
2020
2123
2226
2329
2432
2535
2640
2745
2850
2955
3030
3134
3238
3342
3448
3555
3662
3760
3870
3984
4040
4145
4250
4357
4466
4565
4678
4797
4886
49111
5050
5156
5262
5373
5474
5590
5686
57112
5898
59124
6060
6167
6276
6389
6496
6595
66128
67117

[0,1,2,3,4,5,6,7,8,9,10,12,14,16,18,20,22,24,26,
 28,20,23,26,29,32,35,40,45,50,55,30,34,38,42,48,
 55,62,60,70,84,40,45,50,57,66,65,78,97,86,111,50,
 56,62,73,74,90,86,112,98,124,60,67,76,89,96,95,
 128,117]