A247606 - cp's OEIS frontend

A247606 Number of non-semiprimes among "preprimes" of the n-th kind (defined in comment in A247395).

n	a(n)
1	1
2	7
3	15
4	36
5	31
6	62
7	59
8	111
9	161
10	113
11	224
12	175
13	155
14	258
15	370
16	358
17	240
18	436
19	346
20	297
21	557
22	504
23	691
24	806
25	477
26	367
27	554
28	489
29	938
30	1743
31	786
32	959
33	725
34	1526
35	669
36	1215
37	1207
38	1022
39	1359
40	1286
41	958
42	1947
43	773
44	1206
45	1328
46	3078
47	2740
48	1165
49	915
50	1459
51	1787

[1, 7, 15, 36, 31, 62, 59, 111, 161, 113, 224, 175, 155, 258, 370, 358, 240, 436, 346, 297, 557, 504, 691, 806, 477, 367, 554, 489, 938, 1743, 786, 959, 725, 1526, 669, 1215, 1207, 1022, 1359, 1286, 958, 1947, 773, 1206, 1328, 3078, 2740, 1165, 915, 1459, 1787]

cp's OEIS Frontend

A247606 Number of non-semiprimes among "preprimes" of the n-th kind (defined in comment in A247395).

Table of values

List of values