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A089625 as a simple table

na(n)
12
23
35
45
57
68
710
87
99
1010
1112
1212
1314
1415
1517
1611
1713
1814
1916
2016
2118
2219
2321
2418
2520
2621
2723
2823
2925
3026
3128
3213
3315
3416
3518
3618
3720
3821
3923
4020
4122
4223
4325
4425
4527
4628
4730
4824
4926
5027
5129
5229
5331
5432
5534
5631
5733
5834
5936
6036
6138
6239
6341
6417
6519
6620
6722
6822
6924
7025
7127

[2,3,5,5,7,8,10,7,9,10,12,12,14,15,17,11,13,14,16,
 16,18,19,21,18,20,21,23,23,25,26,28,13,15,16,18,
 18,20,21,23,20,22,23,25,25,27,28,30,24,26,27,29,
 29,31,32,34,31,33,34,36,36,38,39,41,17,19,20,22,
 22,24,25,27]