login

A278507 as a simple table

na(n)
12
24
35
46
511
69
78
817
921
1015
1110
1223
1333
1437
1525
1612
1729
1845
1955
2051
2131
2214
2335
2457
2575
2685
2773
2843
2916
3041
3169
3297
33111
34121
3599
3661
3718
3847
3981
40115
41145
42159
43151
44127
4567
4620
4753
4893
49135
50171
51199
52211
53193
54163
5587
5622
5759
58105
59157
60205
61243
62267
63271
64247
65187
66103
6724
6865
69117
70175
71231
72283
73319
74343
75339
76303
77229
78123

[2,4,5,6,11,9,8,17,21,15,10,23,33,37,25,12,29,45,
 55,51,31,14,35,57,75,85,73,43,16,41,69,97,111,121,
 99,61,18,47,81,115,145,159,151,127,67,20,53,93,
 135,171,199,211,193,163,87,22,59,105,157,205,243,
 267,271,247,187,103,24,65,117,175,231,283,319,343,
 339,303,229,123]