A105333 - cp's OEIS frontend

A105333 a(n) = n*(n+1)/2 mod 16.

n	a(n)
0	0
1	1
2	3
3	6
4	10
5	15
6	5
7	12
8	4
9	13
10	7
11	2
12	14
13	11
14	9
15	8
16	8
17	9
18	11
19	14
20	2
21	7
22	13
23	4
24	12
25	5
26	15
27	10
28	6
29	3
30	1
31	0
32	0
33	1
34	3
35	6
36	10
37	15
38	5
39	12
40	4
41	13
42	7
43	2
44	14
45	11
46	9
47	8
48	8
49	9
50	11
51	14
52	2
53	7
54	13
55	4
56	12
57	5
58	15
59	10
60	6
61	3
62	1
63	0
64	0
65	1
66	3
67	6
68	10
69	15
70	5
71	12
72	4
73	13
74	7
75	2
76	14
77	11
78	9
79	8
80	8
81	9
82	11
83	14
84	2
85	7
86	13
87	4
88	12

[0, 1, 3, 6, 10, 15, 5, 12, 4, 13, 7, 2, 14, 11, 9, 8, 8, 9, 11, 14, 2, 7, 13, 4, 12, 5, 15, 10, 6, 3, 1, 0, 0, 1, 3, 6, 10, 15, 5, 12, 4, 13, 7, 2, 14, 11, 9, 8, 8, 9, 11, 14, 2, 7, 13, 4, 12, 5, 15, 10, 6, 3, 1, 0, 0, 1, 3, 6, 10, 15, 5, 12, 4, 13, 7, 2, 14, 11, 9, 8, 8, 9, 11, 14, 2, 7, 13, 4, 12]

cp's OEIS Frontend

A105333 a(n) = n*(n+1)/2 mod 16.

Table of values

List of values

n	a(n)
0	0
1	1
2	3
3	6
4	10
5	15
6	5
7	12
8	4
9	13
10	7
11	2
12	14
13	11
14	9
15	8
16	8
17	9
18	11
19	14
20	2
21	7
22	13
23	4
24	12
25	5
26	15
27	10
28	6
29	3
30	1
31	0
32	0
33	1
34	3
35	6
36	10
37	15
38	5
39	12
40	4
41	13
42	7
43	2
44	14
45	11
46	9
47	8
48	8
49	9
50	11
51	14
52	2
53	7
54	13
55	4
56	12
57	5
58	15
59	10
60	6
61	3
62	1
63	0
64	0
65	1
66	3
67	6
68	10
69	15
70	5
71	12
72	4
73	13
74	7
75	2
76	14
77	11
78	9
79	8
80	8
81	9
82	11
83	14
84	2
85	7
86	13
87	4
88	12

n	a(n)
0	0
1	1
2	3
3	6
4	10
5	15
6	5
7	12
8	4
9	13
10	7
11	2
12	14
13	11
14	9
15	8
16	8
17	9
18	11
19	14
20	2
21	7
22	13
23	4
24	12
25	5
26	15
27	10
28	6
29	3
30	1
31	0
32	0
33	1
34	3
35	6
36	10
37	15
38	5
39	12
40	4
41	13
42	7
43	2
44	14
45	11
46	9
47	8
48	8
49	9
50	11
51	14
52	2
53	7
54	13
55	4
56	12
57	5
58	15
59	10
60	6
61	3
62	1
63	0
64	0
65	1
66	3
67	6
68	10
69	15
70	5
71	12
72	4
73	13
74	7
75	2
76	14
77	11
78	9
79	8
80	8
81	9
82	11
83	14
84	2
85	7
86	13
87	4
88	12

n	a(n)
0	0
1	1
2	3
3	6
4	10
5	15
6	5
7	12
8	4
9	13
10	7
11	2
12	14
13	11
14	9
15	8
16	8
17	9
18	11
19	14
20	2
21	7
22	13
23	4
24	12
25	5
26	15
27	10
28	6
29	3
30	1
31	0
32	0
33	1
34	3
35	6
36	10
37	15
38	5
39	12
40	4
41	13
42	7
43	2
44	14
45	11
46	9
47	8
48	8
49	9
50	11
51	14
52	2
53	7
54	13
55	4
56	12
57	5
58	15
59	10
60	6
61	3
62	1
63	0
64	0
65	1
66	3
67	6
68	10
69	15
70	5
71	12
72	4
73	13
74	7
75	2
76	14
77	11
78	9
79	8
80	8
81	9
82	11
83	14
84	2
85	7
86	13
87	4
88	12