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A241268 as a simple table

na(n)
12
24
35
410
512
613
714
815
917
1018
1119
1220
1321
1422
1523
1624
1726
1827
1928
2029
2130
2231
2333
2434
2536
2637
2739
2841
2942
3043
3144
3245
3346
3447
3549
3651
3752
3853
3955
4056
4157
4259
4360
4461
4562
4663
4764
4866
4967
5068
5169
5270
5371
5472
5573
5674
5775
5876
5980
6081
6182
6283
6384
6485
6586
6688

[2,4,5,10,12,13,14,15,17,18,19,20,21,22,23,24,26,
 27,28,29,30,31,33,34,36,37,39,41,42,43,44,45,46,
 47,49,51,52,53,55,56,57,59,60,61,62,63,64,66,67,
 68,69,70,71,72,73,74,75,76,80,81,82,83,84,85,86,
 88]