A242962 - cp's OEIS frontend

A242962 a(1) = a(2) = 0; for n >= 3: a(n) = (n*(n+1)/2) mod antisigma(n) = A000217(n) mod A024816(n).

n	a(n)
1	0
2	0
3	0
4	1
5	6
6	3
7	8
8	15
9	13
10	18
11	12
12	28
13	14
14	24
15	24
16	31
17	18
18	39
19	20
20	42
21	32
22	36
23	24
24	60
25	31
26	42
27	40
28	56
29	30
30	72
31	32
32	63
33	48
34	54
35	48
36	91
37	38
38	60
39	56
40	90
41	42
42	96
43	44
44	84
45	78
46	72
47	48
48	124
49	57
50	93
51	72
52	98
53	54
54	120
55	72
56	120
57	80
58	90
59	60
60	168
61	62
62	96
63	104
64	127
65	84

[0, 0, 0, 1, 6, 3, 8, 15, 13, 18, 12, 28, 14, 24, 24, 31, 18, 39, 20, 42, 32, 36, 24, 60, 31, 42, 40, 56, 30, 72, 32, 63, 48, 54, 48, 91, 38, 60, 56, 90, 42, 96, 44, 84, 78, 72, 48, 124, 57, 93, 72, 98, 54, 120, 72, 120, 80, 90, 60, 168, 62, 96, 104, 127, 84]

cp's OEIS Frontend

A242962 a(1) = a(2) = 0; for n >= 3: a(n) = (n*(n+1)/2) mod antisigma(n) = A000217(n) mod A024816(n).

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	1
5	6
6	3
7	8
8	15
9	13
10	18
11	12
12	28
13	14
14	24
15	24
16	31
17	18
18	39
19	20
20	42
21	32
22	36
23	24
24	60
25	31
26	42
27	40
28	56
29	30
30	72
31	32
32	63
33	48
34	54
35	48
36	91
37	38
38	60
39	56
40	90
41	42
42	96
43	44
44	84
45	78
46	72
47	48
48	124
49	57
50	93
51	72
52	98
53	54
54	120
55	72
56	120
57	80
58	90
59	60
60	168
61	62
62	96
63	104
64	127
65	84

n	a(n)
1	0
2	0
3	0
4	1
5	6
6	3
7	8
8	15
9	13
10	18
11	12
12	28
13	14
14	24
15	24
16	31
17	18
18	39
19	20
20	42
21	32
22	36
23	24
24	60
25	31
26	42
27	40
28	56
29	30
30	72
31	32
32	63
33	48
34	54
35	48
36	91
37	38
38	60
39	56
40	90
41	42
42	96
43	44
44	84
45	78
46	72
47	48
48	124
49	57
50	93
51	72
52	98
53	54
54	120
55	72
56	120
57	80
58	90
59	60
60	168
61	62
62	96
63	104
64	127
65	84

n	a(n)
1	0
2	0
3	0
4	1
5	6
6	3
7	8
8	15
9	13
10	18
11	12
12	28
13	14
14	24
15	24
16	31
17	18
18	39
19	20
20	42
21	32
22	36
23	24
24	60
25	31
26	42
27	40
28	56
29	30
30	72
31	32
32	63
33	48
34	54
35	48
36	91
37	38
38	60
39	56
40	90
41	42
42	96
43	44
44	84
45	78
46	72
47	48
48	124
49	57
50	93
51	72
52	98
53	54
54	120
55	72
56	120
57	80
58	90
59	60
60	168
61	62
62	96
63	104
64	127
65	84