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A068451 as a simple table

na(n)
11
21
30
42
54
60
76
87
91
101
118
121
136
140
1511
160
1710
185
196
209
2115
2220
2310
2415
251
2618
275
2813
299
300
3113
3215
332
3427
3528
362
3732
3836
3911
404
4134
4237
430
444
4532
4610
474
484
4932
5046
5139
5237
532
5420
5527
568
5754
5827
5945
609
6126
6218
6359
640
6522
6663
6741
6854
6965
7061
7145
7251
7361
7431
7568
7648
7734
7839
7971
8059

[1,1,0,2,4,0,6,7,1,1,8,1,6,0,11,0,10,5,6,9,15,20,
 10,15,1,18,5,13,9,0,13,15,2,27,28,2,32,36,11,4,34,
 37,0,4,32,10,4,4,32,46,39,37,2,20,27,8,54,27,45,9,
 26,18,59,0,22,63,41,54,65,61,45,51,61,31,68,48,34,
 39,71,59]