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A140201 as a simple table

na(n)
00
11
22
34
44
55
66
78
88
99
1010
1112
1212
1313
1414
1516
1616
1717
1818
1920
2020
2121
2222
2324
2424
2525
2626
2728
2828
2929
3030
3132
3232
3333
3434
3536
3636
3737
3838
3940
4040
4141
4242
4344
4444
4545
4646
4748
4848
4949
5050
5152
5252
5353
5454
5556
5656
5757
5858
5960
6060
6161
6262
6364
6464
6565
6666
6768
6868
6969
7070
7172
7272
7373
7474

[0,1,2,4,4,5,6,8,8,9,10,12,12,13,14,16,16,17,18,
 20,20,21,22,24,24,25,26,28,28,29,30,32,32,33,34,
 36,36,37,38,40,40,41,42,44,44,45,46,48,48,49,50,
 52,52,53,54,56,56,57,58,60,60,61,62,64,64,65,66,
 68,68,69,70,72,72,73,74]