A098147 - cp's OEIS frontend

A098147 Difference between first odd semiprime > 10^n and 10^n.

n	a(n)
1	5
2	11
3	3
4	1
5	1
6	1
7	1
8	1
9	13
10	3
11	7
12	7
13	15
14	13
15	3
16	3
17	15
18	7
19	1
20	19
21	3
22	19
23	13
24	29
25	7
26	7
27	3
28	27
29	13
30	3
31	1
32	9
33	9
34	9
35	27
36	7
37	3
38	7
39	49
40	55
41	81
42	3
43	3
44	9
45	7
46	11
47	69
48	7
49	19
50	13
51	39
52	7
53	1
54	3
55	13
56	13
57	39
58	77
59	27
60	63
61	31
62	51
63	19
64	9
65	27
66	3
67	1
68	39
69	19
70	41
71	21
72	67
73	37
74	63
75	69
76	33
77	3
78	9
79	37
80	67
81	121
82	9
83	21

[5, 11, 3, 1, 1, 1, 1, 1, 13, 3, 7, 7, 15, 13, 3, 3, 15, 7, 1, 19, 3, 19, 13, 29, 7, 7, 3, 27, 13, 3, 1, 9, 9, 9, 27, 7, 3, 7, 49, 55, 81, 3, 3, 9, 7, 11, 69, 7, 19, 13, 39, 7, 1, 3, 13, 13, 39, 77, 27, 63, 31, 51, 19, 9, 27, 3, 1, 39, 19, 41, 21, 67, 37, 63, 69, 33, 3, 9, 37, 67, 121, 9, 21]

cp's OEIS Frontend

A098147 Difference between first odd semiprime > 10^n and 10^n.

Table of values

List of values

n	a(n)
1	5
2	11
3	3
4	1
5	1
6	1
7	1
8	1
9	13
10	3
11	7
12	7
13	15
14	13
15	3
16	3
17	15
18	7
19	1
20	19
21	3
22	19
23	13
24	29
25	7
26	7
27	3
28	27
29	13
30	3
31	1
32	9
33	9
34	9
35	27
36	7
37	3
38	7
39	49
40	55
41	81
42	3
43	3
44	9
45	7
46	11
47	69
48	7
49	19
50	13
51	39
52	7
53	1
54	3
55	13
56	13
57	39
58	77
59	27
60	63
61	31
62	51
63	19
64	9
65	27
66	3
67	1
68	39
69	19
70	41
71	21
72	67
73	37
74	63
75	69
76	33
77	3
78	9
79	37
80	67
81	121
82	9
83	21

n	a(n)
1	5
2	11
3	3
4	1
5	1
6	1
7	1
8	1
9	13
10	3
11	7
12	7
13	15
14	13
15	3
16	3
17	15
18	7
19	1
20	19
21	3
22	19
23	13
24	29
25	7
26	7
27	3
28	27
29	13
30	3
31	1
32	9
33	9
34	9
35	27
36	7
37	3
38	7
39	49
40	55
41	81
42	3
43	3
44	9
45	7
46	11
47	69
48	7
49	19
50	13
51	39
52	7
53	1
54	3
55	13
56	13
57	39
58	77
59	27
60	63
61	31
62	51
63	19
64	9
65	27
66	3
67	1
68	39
69	19
70	41
71	21
72	67
73	37
74	63
75	69
76	33
77	3
78	9
79	37
80	67
81	121
82	9
83	21

n	a(n)
1	5
2	11
3	3
4	1
5	1
6	1
7	1
8	1
9	13
10	3
11	7
12	7
13	15
14	13
15	3
16	3
17	15
18	7
19	1
20	19
21	3
22	19
23	13
24	29
25	7
26	7
27	3
28	27
29	13
30	3
31	1
32	9
33	9
34	9
35	27
36	7
37	3
38	7
39	49
40	55
41	81
42	3
43	3
44	9
45	7
46	11
47	69
48	7
49	19
50	13
51	39
52	7
53	1
54	3
55	13
56	13
57	39
58	77
59	27
60	63
61	31
62	51
63	19
64	9
65	27
66	3
67	1
68	39
69	19
70	41
71	21
72	67
73	37
74	63
75	69
76	33
77	3
78	9
79	37
80	67
81	121
82	9
83	21