A332981 - cp's OEIS frontend

A332981 Smallest semiprime m = p*q such that the sum s = p + q can be expressed as an unordered sum of two primes in exactly n ways.

n	a(n)
1	4
2	21
3	57
4	93
5	183
6	291
7	327
8	395
9	501
10	545
11	695
12	791
13	815
14	831
15	1145
16	1205
17	1415
18	1631
19	1461
20	1745
21	1941
22	1865
23	2661
24	2315
25	2615
26	2855
27	2495
28	2285
29	3665
30	2705
31	2721
32	3521
33	3561
34	3351
35	3755
36	4341
37	3545
38	4701
39	4265
40	4881
41	3981
42	4821
43	5601
44	5255
45	6671
46	6041
47	4595

[4, 21, 57, 93, 183, 291, 327, 395, 501, 545, 695, 791, 815, 831, 1145, 1205, 1415, 1631, 1461, 1745, 1941, 1865, 2661, 2315, 2615, 2855, 2495, 2285, 3665, 2705, 2721, 3521, 3561, 3351, 3755, 4341, 3545, 4701, 4265, 4881, 3981, 4821, 5601, 5255, 6671, 6041, 4595]

cp's OEIS Frontend

A332981 Smallest semiprime m = p*q such that the sum s = p + q can be expressed as an unordered sum of two primes in exactly n ways.

Table of values

List of values