login

A072227 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1011
1113
1217
1319
1422
1523
1626
1727
1829
1931
2033
2137
2239
2341
2443
2544
2646
2747
2853
2955
3059
3161
3262
3366
3467
3569
3671
3773
3877
3979
4082
4183
4286
4388
4489
4593
4697
4799
48101
49103
50107
51109
52113
53121
54127
55131
56137
57139
58143
59149
60151
61157
62163
63167
64169
65173

[1,2,3,4,5,6,7,8,9,11,13,17,19,22,23,26,27,29,31,
 33,37,39,41,43,44,46,47,53,55,59,61,62,66,67,69,
 71,73,77,79,82,83,86,88,89,93,97,99,101,103,107,
 109,113,121,127,131,137,139,143,149,151,157,163,
 167,169,173]