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A245604 as a simple table

na(n)
11
22
34
43
56
67
710
85
99
1011
1115
1212
1316
1418
1524
168
1714
1817
1922
2019
2125
2228
2335
2420
2526
2629
2736
2831
2939
3044
3155
3213
3321
3427
3534
3630
3738
3842
3951
4032
4140
4245
4356
4450
4560
4667
4781
4837
4946
5047
5157
5252
5362
5468
5582
5659
5765
5872
5986
6079
6193
62105
63121
6423
6533
6641
6749
6848
6958
7066
7177
7253
7364
7471
7585
7676
7790
7899
79111
8061

[1,2,4,3,6,7,10,5,9,11,15,12,16,18,24,8,14,17,22,
 19,25,28,35,20,26,29,36,31,39,44,55,13,21,27,34,
 30,38,42,51,32,40,45,56,50,60,67,81,37,46,47,57,
 52,62,68,82,59,65,72,86,79,93,105,121,23,33,41,49,
 48,58,66,77,53,64,71,85,76,90,99,111,61]