login

A319663 as a simple table

na(n)
21
31
45
51
65
79
813
91
105
1125
1229
1317
1421
159
1613
171
185
1925
2061
2149
2253
239
2445
2533
2637
2757
2829
2917
3021
3141
3213
331
345
3525
36125
37113
3853
399
4045
4197
42101
43121
4493
4581
4621
47105
4813
4965
5069
5189
5261
5349
54117
5573
56109
5733
5837
5957
6029
6117
6285
6341
6477

[1,1,5,1,5,9,13,1,5,25,29,17,21,9,13,1,5,25,61,49,
 53,9,45,33,37,57,29,17,21,41,13,1,5,25,125,113,53,
 9,45,97,101,121,93,81,21,105,13,65,69,89,61,49,
 117,73,109,33,37,57,29,17,85,41,77]