A252984 - cp's OEIS frontend

A252984 a(0)=4. a(n) is the smallest number not in the sequence such that Sum_{k=1..n} a(k) divides Product_{k=1..n} a(k).

n	a(n)
0	4
1	12
2	8
3	24
4	6
5	10
6	16
7	20
8	25
9	3
10	7
11	5
12	22
13	13
14	1
15	19
16	14
17	11
18	27
19	9
20	17
21	2
22	29
23	15
24	21
25	23
26	28
27	34
28	30
29	31
30	18
31	35
32	33
33	26
34	32
35	37
36	36
37	38
38	39
39	45
40	42
41	43
42	40
43	49
44	41
45	48
46	46
47	44
48	47
49	50
50	51
51	54
52	55
53	53
54	52
55	56
56	57
57	62
58	61
59	60
60	64
61	68
62	67
63	58
64	63
65	70
66	69
67	71
68	65
69	77
70	66
71	72
72	74
73	73
74	59

[4, 12, 8, 24, 6, 10, 16, 20, 25, 3, 7, 5, 22, 13, 1, 19, 14, 11, 27, 9, 17, 2, 29, 15, 21, 23, 28, 34, 30, 31, 18, 35, 33, 26, 32, 37, 36, 38, 39, 45, 42, 43, 40, 49, 41, 48, 46, 44, 47, 50, 51, 54, 55, 53, 52, 56, 57, 62, 61, 60, 64, 68, 67, 58, 63, 70, 69, 71, 65, 77, 66, 72, 74, 73, 59]

cp's OEIS Frontend

A252984 a(0)=4. a(n) is the smallest number not in the sequence such that Sum_{k=1..n} a(k) divides Product_{k=1..n} a(k).

Table of values

List of values

n	a(n)
0	4
1	12
2	8
3	24
4	6
5	10
6	16
7	20
8	25
9	3
10	7
11	5
12	22
13	13
14	1
15	19
16	14
17	11
18	27
19	9
20	17
21	2
22	29
23	15
24	21
25	23
26	28
27	34
28	30
29	31
30	18
31	35
32	33
33	26
34	32
35	37
36	36
37	38
38	39
39	45
40	42
41	43
42	40
43	49
44	41
45	48
46	46
47	44
48	47
49	50
50	51
51	54
52	55
53	53
54	52
55	56
56	57
57	62
58	61
59	60
60	64
61	68
62	67
63	58
64	63
65	70
66	69
67	71
68	65
69	77
70	66
71	72
72	74
73	73
74	59

n	a(n)
0	4
1	12
2	8
3	24
4	6
5	10
6	16
7	20
8	25
9	3
10	7
11	5
12	22
13	13
14	1
15	19
16	14
17	11
18	27
19	9
20	17
21	2
22	29
23	15
24	21
25	23
26	28
27	34
28	30
29	31
30	18
31	35
32	33
33	26
34	32
35	37
36	36
37	38
38	39
39	45
40	42
41	43
42	40
43	49
44	41
45	48
46	46
47	44
48	47
49	50
50	51
51	54
52	55
53	53
54	52
55	56
56	57
57	62
58	61
59	60
60	64
61	68
62	67
63	58
64	63
65	70
66	69
67	71
68	65
69	77
70	66
71	72
72	74
73	73
74	59

n	a(n)
0	4
1	12
2	8
3	24
4	6
5	10
6	16
7	20
8	25
9	3
10	7
11	5
12	22
13	13
14	1
15	19
16	14
17	11
18	27
19	9
20	17
21	2
22	29
23	15
24	21
25	23
26	28
27	34
28	30
29	31
30	18
31	35
32	33
33	26
34	32
35	37
36	36
37	38
38	39
39	45
40	42
41	43
42	40
43	49
44	41
45	48
46	46
47	44
48	47
49	50
50	51
51	54
52	55
53	53
54	52
55	56
56	57
57	62
58	61
59	60
60	64
61	68
62	67
63	58
64	63
65	70
66	69
67	71
68	65
69	77
70	66
71	72
72	74
73	73
74	59