A132996 - cp's OEIS frontend

A132996 a(n) = gcd(Sum_{k=1..n} c(k), Product_{j=1..n} c(j)), where c(k) is the k-th composite.

n	a(n)
1	4
2	2
3	6
4	27
5	1
6	1
7	63
8	6
9	2
10	112
11	12
12	9
13	175
14	1
15	224
16	250
17	1
18	5
19	5
20	1
21	400
22	14
23	7
24	5
25	3
26	6
27	2
28	8
29	12
30	3
31	17
32	847
33	896
34	22
35	1
36	1
37	1
38	6
39	2
40	1
41	3
42	3
43	1
44	2
45	6
46	31
47	1
48	1
49	26
50	4
51	28
52	2
53	1
54	1
55	10
56	2368
57	2448
58	9
59	7
60	2695
61	20
62	2
63	1
64	1
65	31
66	18
67	2
68	1
69	9
70	3596
71	52
72	10
73	1
74	1
75	1
76	5
77	4300
78	2
79	74
80	4624

[4, 2, 6, 27, 1, 1, 63, 6, 2, 112, 12, 9, 175, 1, 224, 250, 1, 5, 5, 1, 400, 14, 7, 5, 3, 6, 2, 8, 12, 3, 17, 847, 896, 22, 1, 1, 1, 6, 2, 1, 3, 3, 1, 2, 6, 31, 1, 1, 26, 4, 28, 2, 1, 1, 10, 2368, 2448, 9, 7, 2695, 20, 2, 1, 1, 31, 18, 2, 1, 9, 3596, 52, 10, 1, 1, 1, 5, 4300, 2, 74, 4624]

cp's OEIS Frontend

A132996 a(n) = gcd(Sum_{k=1..n} c(k), Product_{j=1..n} c(j)), where c(k) is the k-th composite.

Table of values

List of values