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A304083 as a simple table

na(n)
00
11
23
32
47
56
64
75
815
914
1012
118
1213
139
1411
1510
1631
1730
1828
1924
2016
2129
2225
2317
2427
2526
2618
2723
2822
2920
3021
3163
3219
3359
3458
3556
3648
3732
3862
3960
4052
4136
4261
4357
4449
4533
4655
4754
4850
4934
5051
5135
5247
5346
5444
5540
5645
5741
5843
5942
60127
6153
6237
6339
6438
65126
66124
67120
68112
6996
7064
71125
72121
73113
7497
7565
76123
77122
78114
7998
8066
81119
82118
83116
84100
8568
86117
87101

[0,1,3,2,7,6,4,5,15,14,12,8,13,9,11,10,31,30,28,
 24,16,29,25,17,27,26,18,23,22,20,21,63,19,59,58,
 56,48,32,62,60,52,36,61,57,49,33,55,54,50,34,51,
 35,47,46,44,40,45,41,43,42,127,53,37,39,38,126,
 124,120,112,96,64,125,121,113,97,65,123,122,114,
 98,66,119,118,116,100,68,117,101]