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A068446 as a simple table

na(n)
12
20
31
41
53
61
76
86
92
103
115
122
1312
141
157
161
173
1810
1912
2019
2110
2218
2321
246
253
2610
2710
2826
2918
300
3126
3230
335
3421
3521
365
3728
3834
3922
409
4128
4232
430
449
4519
4620
478
489
4916
5043
5128
5222
534
5440
5554
5617
5751
5855
5931
6018
6152
6237
6355
640
6545
6661
6716
6841
6962
7053
7120
7231
7349
7463
7562
7620
7769
781
7964

[2,0,1,1,3,1,6,6,2,3,5,2,12,1,7,1,3,10,12,19,10,
 18,21,6,3,10,10,26,18,0,26,30,5,21,21,5,28,34,22,
 9,28,32,0,9,19,20,8,9,16,43,28,22,4,40,54,17,51,
 55,31,18,52,37,55,0,45,61,16,41,62,53,20,31,49,63,
 62,20,69,1,64]