A072511 - cp's OEIS frontend

A072511 Least number m such that 2m can be expressed as the sum of two distinct primes in exactly n ways.

n	a(n)
0	1
1	4
2	8
3	12
4	18
5	24
6	30
7	39
8	42
9	45
10	57
11	72
12	60
13	84
14	90
15	117
16	123
17	144
18	120
19	105
20	162
21	150
22	180
23	237
24	165
25	264
26	288
27	195
28	231
29	240
30	210
31	285
32	255
33	336
34	396
35	378
36	438
37	357
38	399
39	345
40	519
41	315
42	504
43	465
44	390
45	480
46	435
47	462
48	450
49	567
50	717
51	420
52	495
53	651
54	540
55	615

[1, 4, 8, 12, 18, 24, 30, 39, 42, 45, 57, 72, 60, 84, 90, 117, 123, 144, 120, 105, 162, 150, 180, 237, 165, 264, 288, 195, 231, 240, 210, 285, 255, 336, 396, 378, 438, 357, 399, 345, 519, 315, 504, 465, 390, 480, 435, 462, 450, 567, 717, 420, 495, 651, 540, 615]

cp's OEIS Frontend

A072511 Least number m such that 2m can be expressed as the sum of two distinct primes in exactly n ways.

Table of values

List of values

n	a(n)
0	1
1	4
2	8
3	12
4	18
5	24
6	30
7	39
8	42
9	45
10	57
11	72
12	60
13	84
14	90
15	117
16	123
17	144
18	120
19	105
20	162
21	150
22	180
23	237
24	165
25	264
26	288
27	195
28	231
29	240
30	210
31	285
32	255
33	336
34	396
35	378
36	438
37	357
38	399
39	345
40	519
41	315
42	504
43	465
44	390
45	480
46	435
47	462
48	450
49	567
50	717
51	420
52	495
53	651
54	540
55	615

n	a(n)
0	1
1	4
2	8
3	12
4	18
5	24
6	30
7	39
8	42
9	45
10	57
11	72
12	60
13	84
14	90
15	117
16	123
17	144
18	120
19	105
20	162
21	150
22	180
23	237
24	165
25	264
26	288
27	195
28	231
29	240
30	210
31	285
32	255
33	336
34	396
35	378
36	438
37	357
38	399
39	345
40	519
41	315
42	504
43	465
44	390
45	480
46	435
47	462
48	450
49	567
50	717
51	420
52	495
53	651
54	540
55	615

n	a(n)
0	1
1	4
2	8
3	12
4	18
5	24
6	30
7	39
8	42
9	45
10	57
11	72
12	60
13	84
14	90
15	117
16	123
17	144
18	120
19	105
20	162
21	150
22	180
23	237
24	165
25	264
26	288
27	195
28	231
29	240
30	210
31	285
32	255
33	336
34	396
35	378
36	438
37	357
38	399
39	345
40	519
41	315
42	504
43	465
44	390
45	480
46	435
47	462
48	450
49	567
50	717
51	420
52	495
53	651
54	540
55	615