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A302569 as a simple table

na(n)
12
23
34
45
56
67
78
810
911
1012
1113
1214
1315
1416
1517
1619
1720
1822
1923
2024
2126
2228
2329
2430
2531
2632
2733
2834
2935
3037
3138
3240
3341
3443
3544
3646
3747
3848
3951
4052
4153
4255
4356
4458
4559
4660
4761
4862
4964
5066
5167
5268
5369
5470
5571
5673
5774
5876
5977
6079
6180
6282
6383
6485
6586
6688
6789

[2,3,4,5,6,7,8,10,11,12,13,14,15,16,17,19,20,22,
 23,24,26,28,29,30,31,32,33,34,35,37,38,40,41,43,
 44,46,47,48,51,52,53,55,56,58,59,60,61,62,64,66,
 67,68,69,70,71,73,74,76,77,79,80,82,83,85,86,88,
 89]