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A115950 as a simple table

na(n)
11
22
34
46
58
610
73
812
95
1014
117
1216
1318
149
1520
1622
1724
1811
1926
2028
2130
2213
2332
2434
2515
2636
2738
2817
2940
3042
3119
3244
3321
3446
3548
3623
3750
3852
3925
4054
4127
4256
4358
4429
4560
4662
4731
4864
4966
5033
5168
5270
5335
5472
5574
5637
5776
5878
5939
6080
6182
6241
6384
6486
6588
6643
6790
6892
6945
7094
7196
7247

[1,2,4,6,8,10,3,12,5,14,7,16,18,9,20,22,24,11,26,
 28,30,13,32,34,15,36,38,17,40,42,19,44,21,46,48,
 23,50,52,25,54,27,56,58,29,60,62,31,64,66,33,68,
 70,35,72,74,37,76,78,39,80,82,41,84,86,88,43,90,
 92,45,94,96,47]