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A240199 as a simple table

na(n)
00
11
24
33
49
58
65
76
816
915
1012
1113
127
138
1411
1510
1625
1724
1821
1922
2016
2117
2220
2319
249
2510
2613
2712
2818
2917
3014
3115
3236
3335
3432
3533
3627
3728
3831
3930
4020
4121
4224
4323
4429
4528
4625
4726
4811
4912
5015
5114
5220
5319
5416
5517
5627
5726
5823
5924
6018

[0,1,4,3,9,8,5,6,16,15,12,13,7,8,11,10,25,24,21,
 22,16,17,20,19,9,10,13,12,18,17,14,15,36,35,32,33,
 27,28,31,30,20,21,24,23,29,28,25,26,11,12,15,14,
 20,19,16,17,27,26,23,24,18]