login

A284130 as a simple table

na(n)
11
21
31
43
51
63
75
83
93
105
1111
125
139
145
1511
1621
1711
1815
1915
2011
2121
2243
2321
2433
2525
2633
2721
2843
2985
3043
3163
3255
3355
3463
3543
3685
37171
3885
39129
40105
41121
42105
43129
4485
45171
46341
47171
48255
49215
50231
51231
52215
53255
54171
55341
56683
57341
58513
59425
60473
61441
62473
63425
64513
65341
66683

[1,1,1,3,1,3,5,3,3,5,11,5,9,5,11,21,11,15,15,11,
 21,43,21,33,25,33,21,43,85,43,63,55,55,63,43,85,
 171,85,129,105,121,105,129,85,171,341,171,255,215,
 231,231,215,255,171,341,683,341,513,425,473,441,
 473,425,513,341,683]