A244748 - cp's OEIS frontend

A244748 Numbers k such that (product of digits of k)^2 + 1 is prime.

n	a(n)
1	1
2	2
3	4
4	6
5	11
6	12
7	14
8	16
9	21
10	22
11	23
12	25
13	27
14	28
15	32
16	38
17	41
18	44
19	45
20	46
21	49
22	52
23	54
24	58
25	61
26	64
27	66
28	69
29	72
30	78
31	82
32	83
33	85
34	87
35	94
36	96
37	111
38	112
39	114
40	116
41	121
42	122
43	123
44	125
45	127
46	128
47	132
48	138
49	141
50	144
51	145
52	146
53	149
54	152
55	154
56	158
57	161
58	164
59	166
60	169
61	172
62	178
63	182
64	183

[1, 2, 4, 6, 11, 12, 14, 16, 21, 22, 23, 25, 27, 28, 32, 38, 41, 44, 45, 46, 49, 52, 54, 58, 61, 64, 66, 69, 72, 78, 82, 83, 85, 87, 94, 96, 111, 112, 114, 116, 121, 122, 123, 125, 127, 128, 132, 138, 141, 144, 145, 146, 149, 152, 154, 158, 161, 164, 166, 169, 172, 178, 182, 183]

cp's OEIS Frontend

A244748 Numbers k such that (product of digits of k)^2 + 1 is prime.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	6
5	11
6	12
7	14
8	16
9	21
10	22
11	23
12	25
13	27
14	28
15	32
16	38
17	41
18	44
19	45
20	46
21	49
22	52
23	54
24	58
25	61
26	64
27	66
28	69
29	72
30	78
31	82
32	83
33	85
34	87
35	94
36	96
37	111
38	112
39	114
40	116
41	121
42	122
43	123
44	125
45	127
46	128
47	132
48	138
49	141
50	144
51	145
52	146
53	149
54	152
55	154
56	158
57	161
58	164
59	166
60	169
61	172
62	178
63	182
64	183

n	a(n)
1	1
2	2
3	4
4	6
5	11
6	12
7	14
8	16
9	21
10	22
11	23
12	25
13	27
14	28
15	32
16	38
17	41
18	44
19	45
20	46
21	49
22	52
23	54
24	58
25	61
26	64
27	66
28	69
29	72
30	78
31	82
32	83
33	85
34	87
35	94
36	96
37	111
38	112
39	114
40	116
41	121
42	122
43	123
44	125
45	127
46	128
47	132
48	138
49	141
50	144
51	145
52	146
53	149
54	152
55	154
56	158
57	161
58	164
59	166
60	169
61	172
62	178
63	182
64	183

n	a(n)
1	1
2	2
3	4
4	6
5	11
6	12
7	14
8	16
9	21
10	22
11	23
12	25
13	27
14	28
15	32
16	38
17	41
18	44
19	45
20	46
21	49
22	52
23	54
24	58
25	61
26	64
27	66
28	69
29	72
30	78
31	82
32	83
33	85
34	87
35	94
36	96
37	111
38	112
39	114
40	116
41	121
42	122
43	123
44	125
45	127
46	128
47	132
48	138
49	141
50	144
51	145
52	146
53	149
54	152
55	154
56	158
57	161
58	164
59	166
60	169
61	172
62	178
63	182
64	183