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A337679 as a simple table

na(n)
10
20
30
40
51
60
72
81
92
102
114
121
135
145
154
165
177
185
198
206
218
2211
2310
246
2511
2614
2712
2812
2913
3010
3114
3216
3316
3420
3516
3614
3717
3823
3920
4018
4119
4221
4320
4426
4521
4629
4722
4823
4924
5030
5128
5233
5325
5433
5528
5632
5732
5838
5928
6028
6129
6241
6334
6442
6534
6644
6732
6847
6940
7043
7134
7241
7335
7450
7544
7654

[0,0,0,0,1,0,2,1,2,2,4,1,5,5,4,5,7,5,8,6,8,11,10,
 6,11,14,12,12,13,10,14,16,16,20,16,14,17,23,20,18,
 19,21,20,26,21,29,22,23,24,30,28,33,25,33,28,32,
 32,38,28,28,29,41,34,42,34,44,32,47,40,43,34,41,
 35,50,44,54]