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A331164 as a simple table

na(n)
01
11
21
33
46
55
69
78
811
910
1014
1113
1216
1313
1419
1515
1618
1715
1822
1918
2021
2118
2224
2320
2423
2520
2627
2723
2826
2923
3029
3122
3225
3322
3432
3526
3629
3726
3832
3925
4028
4125
4234
4328
4431
4528
4634
4727
4830
4927
5037
5131
5234
5331
5437
5530
5633
5730
5839
5933
6036
6133
6239

[1,1,1,3,6,5,9,8,11,10,14,13,16,13,19,15,18,15,22,
 18,21,18,24,20,23,20,27,23,26,23,29,22,25,22,32,
 26,29,26,32,25,28,25,34,28,31,28,34,27,30,27,37,
 31,34,31,37,30,33,30,39,33,36,33,39]