A242592 - cp's OEIS frontend

A242592 Squarefree semiprimes, n=pq, where reversal(n) is semiprime and reversal(n) = reversal(p)reversal(q).

n	a(n)
1	6
2	22
3	26
4	33
5	39
6	55
7	62
8	77
9	93
10	143
11	187
12	202
13	226
14	262
15	303
16	339
17	341
18	393
19	505
20	622
21	626
22	707
23	781
24	933
25	939
26	1111
27	1177
28	1243
29	1313
30	1441
31	1469
32	1661
33	1717
34	1991
35	2042
36	2062
37	2066
38	2206
39	2402
40	2426
41	2446
42	2462
43	2602
44	2642
45	3063
46	3093
47	3099
48	3131
49	3309

[6, 22, 26, 33, 39, 55, 62, 77, 93, 143, 187, 202, 226, 262, 303, 339, 341, 393, 505, 622, 626, 707, 781, 933, 939, 1111, 1177, 1243, 1313, 1441, 1469, 1661, 1717, 1991, 2042, 2062, 2066, 2206, 2402, 2426, 2446, 2462, 2602, 2642, 3063, 3093, 3099, 3131, 3309]

cp's OEIS Frontend

A242592 Squarefree semiprimes, n=pq, where reversal(n) is semiprime and reversal(n) = reversal(p)reversal(q).

Table of values

List of values

cp's OEIS Frontend

A242592 Squarefree semiprimes, n=p*q, where reversal(n) is semiprime and reversal(n) = reversal(p)*reversal(q).

Table of values

List of values

A242592 Squarefree semiprimes, n=pq, where reversal(n) is semiprime and reversal(n) = reversal(p)reversal(q).