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A064576 as a simple table

na(n)
11
21
32
41
53
61
74
82
95
101
118
121
137
143
1510
161
1713
181
1915
204
2115
221
2323
242
2521
265
2727
281
2933
301
3136
326
3337
343
3553
361
3747
388
3962
401
4168
421
4375
4411
4575
461
47103
482
4997
5010
51115
521
53126
544
55142
5613
57141
581
59181
601
61167
6217
63202
644
65218
661
67239
6816
69243
701
71302
721
73285
7422
75331
763
77349

[1,1,2,1,3,1,4,2,5,1,8,1,7,3,10,1,13,1,15,4,15,1,
 23,2,21,5,27,1,33,1,36,6,37,3,53,1,47,8,62,1,68,1,
 75,11,75,1,103,2,97,10,115,1,126,4,142,13,141,1,
 181,1,167,17,202,4,218,1,239,16,243,1,302,1,285,
 22,331,3,349]