login

A097721 as a simple table

na(n)
13
22
32
42
513
63
77
811
92
102
113
123
1311
143
157
163
175
1811
197
207
213
227
233
2419
257
2611
2713
2817
2919
3011
3117
3211
3313
3413
3519
3611
3717
3813
3917
4013
4117
4211
4311
4413
4517
4619
4711
4823
49127
5029
5123
5223
5341
54151
55157
5623
5729
5871
59227
60181
6123
6223
6337
6411
6513
6617
6731
6837
6937
70149
7153
7259
7337
7437
7537

[3,2,2,2,13,3,7,11,2,2,3,3,11,3,7,3,5,11,7,7,3,7,
 3,19,7,11,13,17,19,11,17,11,13,13,19,11,17,13,17,
 13,17,11,11,13,17,19,11,23,127,29,23,23,41,151,
 157,23,29,71,227,181,23,23,37,11,13,17,31,37,37,
 149,53,59,37,37,37]