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A023831 as a simple table

na(n)
12
24
34
47
57
68
78
811
911
1012
118
1212
1313
1415
1513
1618
1714
1818
1914
2018
2120
2218
2317
2421
2522
2620
2719
2822
2920
3024
3119
3226
3324
3426
3523
3628
3727
3827
3927
4030
4129
4231
4327
4430
4530
4630
4727
4834
4931
5033
5131
5234
5333
5433
5530
5634
5733
5836
5931
6037
6138
6239
6337
6442
6539
6641
6738
6842
6943
7043
7138
7246
7344
7444
7544
7646
7746

[2,4,4,7,7,8,8,11,11,12,8,12,13,15,13,18,14,18,14,
 18,20,18,17,21,22,20,19,22,20,24,19,26,24,26,23,
 28,27,27,27,30,29,31,27,30,30,30,27,34,31,33,31,
 34,33,33,30,34,33,36,31,37,38,39,37,42,39,41,38,
 42,43,43,38,46,44,44,44,46,46]