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A186421 as a simple table

na(n)
00
11
22
31
44
53
66
73
88
95
1010
115
1212
137
1414
157
1616
179
1818
199
2020
2111
2222
2311
2424
2513
2626
2713
2828
2915
3030
3115
3232
3317
3434
3517
3636
3719
3838
3919
4040
4121
4242
4321
4444
4523
4646
4723
4848
4925
5050
5125
5252
5327
5454
5527
5656
5729
5858
5929
6060
6131
6262
6331
6464
6533
6666
6733
6868
6935
7070
7135
7272
7337
7474
7537
7676
7739
7878
7939
8080
8141
8282
8341
8484
8543
8686
8743

[0,1,2,1,4,3,6,3,8,5,10,5,12,7,14,7,16,9,18,9,20,
 11,22,11,24,13,26,13,28,15,30,15,32,17,34,17,36,
 19,38,19,40,21,42,21,44,23,46,23,48,25,50,25,52,
 27,54,27,56,29,58,29,60,31,62,31,64,33,66,33,68,
 35,70,35,72,37,74,37,76,39,78,39,80,41,82,41,84,
 43,86,43]