A104772 - cp's OEIS frontend

A104772 If n<=2 then n else (if n is odd then 2a(n+1) else pq, where n=p+q, p<=q, primes).

n	a(n)
1	1
2	2
3	8
4	4
5	18
6	9
7	30
8	15
9	42
10	21
11	70
12	35
13	66
14	33
15	78
16	39
17	130
18	65
19	102
20	51
21	114
22	57
23	190
24	95
25	138
26	69
27	230
28	115
29	322
30	161
31	174
32	87
33	186
34	93
35	310
36	155
37	434
38	217
39	222
40	111
41	370
42	185
43	246
44	123
45	258
46	129
47	430
48	215
49	282
50	141
51	470
52	235
53	658
54	329
55	318
56	159
57	530
58	265
59	742

[1, 2, 8, 4, 18, 9, 30, 15, 42, 21, 70, 35, 66, 33, 78, 39, 130, 65, 102, 51, 114, 57, 190, 95, 138, 69, 230, 115, 322, 161, 174, 87, 186, 93, 310, 155, 434, 217, 222, 111, 370, 185, 246, 123, 258, 129, 430, 215, 282, 141, 470, 235, 658, 329, 318, 159, 530, 265, 742]

cp's OEIS Frontend

A104772 If n<=2 then n else (if n is odd then 2a(n+1) else pq, where n=p+q, p<=q, primes).

Table of values

List of values

n	a(n)
1	1
2	2
3	8
4	4
5	18
6	9
7	30
8	15
9	42
10	21
11	70
12	35
13	66
14	33
15	78
16	39
17	130
18	65
19	102
20	51
21	114
22	57
23	190
24	95
25	138
26	69
27	230
28	115
29	322
30	161
31	174
32	87
33	186
34	93
35	310
36	155
37	434
38	217
39	222
40	111
41	370
42	185
43	246
44	123
45	258
46	129
47	430
48	215
49	282
50	141
51	470
52	235
53	658
54	329
55	318
56	159
57	530
58	265
59	742

n	a(n)
1	1
2	2
3	8
4	4
5	18
6	9
7	30
8	15
9	42
10	21
11	70
12	35
13	66
14	33
15	78
16	39
17	130
18	65
19	102
20	51
21	114
22	57
23	190
24	95
25	138
26	69
27	230
28	115
29	322
30	161
31	174
32	87
33	186
34	93
35	310
36	155
37	434
38	217
39	222
40	111
41	370
42	185
43	246
44	123
45	258
46	129
47	430
48	215
49	282
50	141
51	470
52	235
53	658
54	329
55	318
56	159
57	530
58	265
59	742

cp's OEIS Frontend

A104772 If n<=2 then n else (if n is odd then 2*a(n+1) else p*q, where n=p+q, p<=q, primes).

Table of values

List of values

A104772 If n<=2 then n else (if n is odd then 2a(n+1) else pq, where n=p+q, p<=q, primes).

n	a(n)
1	1
2	2
3	8
4	4
5	18
6	9
7	30
8	15
9	42
10	21
11	70
12	35
13	66
14	33
15	78
16	39
17	130
18	65
19	102
20	51
21	114
22	57
23	190
24	95
25	138
26	69
27	230
28	115
29	322
30	161
31	174
32	87
33	186
34	93
35	310
36	155
37	434
38	217
39	222
40	111
41	370
42	185
43	246
44	123
45	258
46	129
47	430
48	215
49	282
50	141
51	470
52	235
53	658
54	329
55	318
56	159
57	530
58	265
59	742