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A055242 as a simple table

na(n)
10
20
30
40
50
60
70
80
90
100
114
120
135
140
150
160
177
180
198
200
218
226
2310
240
2511
267
2711
280
2913
300
3114
329
3314
3410
3516
360
3717
3811
3917
4011
4119
420
4320
4413
4519
4614
4722
480
4923
5014
5123
5215
5325
5411
5526
5617
5726
5818
5928
600
6129
6219
6329
6419
6531
6614
6732
6821
6932
7022
7134
7213
7335
7423
7534
7623
7737
7817
7938

[0,0,0,0,0,0,0,0,0,0,4,0,5,0,0,0,7,0,8,0,8,6,10,0,
 11,7,11,0,13,0,14,9,14,10,16,0,17,11,17,11,19,0,
 20,13,19,14,22,0,23,14,23,15,25,11,26,17,26,18,28,
 0,29,19,29,19,31,14,32,21,32,22,34,13,35,23,34,23,
 37,17,38]