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A360556 as a simple table

na(n)
12
23
35
46
57
68
79
811
912
1013
1114
1216
1317
1418
1519
1620
1721
1823
1926
2027
2128
2229
2330
2431
2532
2635
2737
2838
2939
3041
3142
3243
3344
3445
3547
3648
3749
3850
3952
4053
4157
4258
4359
4460
4561
4663
4764
4865
4966
5067
5168
5270
5371
5472
5573
5674
5775
5876
5978
6079
6180
6281
6383
6484
6586
6687
6789

[2,3,5,6,7,8,9,11,12,13,14,16,17,18,19,20,21,23,
 26,27,28,29,30,31,32,35,37,38,39,41,42,43,44,45,
 47,48,49,50,52,53,57,58,59,60,61,63,64,65,66,67,
 68,70,71,72,73,74,75,76,78,79,80,81,83,84,86,87,
 89]