A307046 - cp's OEIS frontend

A307046 Numbers k such that k^2 reversed is a prime and k^2 + (k^2 reversed) is a semiprime.

n	a(n)
1	4
2	28
3	40
4	62
5	106
6	140
7	193
8	196
9	274
10	316
11	334
12	400
13	410
14	554
15	556
16	620
17	862
18	866
19	874
20	884
21	962
22	1004
23	1025
24	1066
25	1154
26	1174
27	1190
28	1205
29	1256
30	1274
31	1294
32	1360
33	1390
34	1394
35	1396
36	1400
37	1744
38	1784
39	1816
40	1844
41	1891
42	1900
43	1927
44	1960
45	1981
46	1988
47	2672
48	2696
49	2710
50	2722
51	2740
52	2786
53	2800
54	3016
55	3026

[4, 28, 40, 62, 106, 140, 193, 196, 274, 316, 334, 400, 410, 554, 556, 620, 862, 866, 874, 884, 962, 1004, 1025, 1066, 1154, 1174, 1190, 1205, 1256, 1274, 1294, 1360, 1390, 1394, 1396, 1400, 1744, 1784, 1816, 1844, 1891, 1900, 1927, 1960, 1981, 1988, 2672, 2696, 2710, 2722, 2740, 2786, 2800, 3016, 3026]

cp's OEIS Frontend

A307046 Numbers k such that k^2 reversed is a prime and k^2 + (k^2 reversed) is a semiprime.

Table of values

List of values