A105198 - cp's OEIS frontend

A105198 a(n) = n(n+1)/2 mod 4.

n	a(n)
0	0
1	1
2	3
3	2
4	2
5	3
6	1
7	0
8	0
9	1
10	3
11	2
12	2
13	3
14	1
15	0
16	0
17	1
18	3
19	2
20	2
21	3
22	1
23	0
24	0
25	1
26	3
27	2
28	2
29	3
30	1
31	0
32	0
33	1
34	3
35	2
36	2
37	3
38	1
39	0
40	0
41	1
42	3
43	2
44	2
45	3
46	1
47	0
48	0
49	1
50	3
51	2
52	2
53	3
54	1
55	0
56	0
57	1
58	3
59	2
60	2
61	3
62	1
63	0
64	0
65	1
66	3
67	2
68	2
69	3
70	1
71	0
72	0
73	1
74	3
75	2
76	2
77	3
78	1
79	0
80	0
81	1
82	3
83	2
84	2
85	3
86	1
87	0
88	0
89	1
90	3
91	2
92	2
93	3
94	1
95	0
96	0
97	1
98	3
99	2
100	2
101	3
102	1
103	0
104	0

[0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0]

cp's OEIS Frontend

A105198 a(n) = n(n+1)/2 mod 4.

Table of values

List of values

n	a(n)
0	0
1	1
2	3
3	2
4	2
5	3
6	1
7	0
8	0
9	1
10	3
11	2
12	2
13	3
14	1
15	0
16	0
17	1
18	3
19	2
20	2
21	3
22	1
23	0
24	0
25	1
26	3
27	2
28	2
29	3
30	1
31	0
32	0
33	1
34	3
35	2
36	2
37	3
38	1
39	0
40	0
41	1
42	3
43	2
44	2
45	3
46	1
47	0
48	0
49	1
50	3
51	2
52	2
53	3
54	1
55	0
56	0
57	1
58	3
59	2
60	2
61	3
62	1
63	0
64	0
65	1
66	3
67	2
68	2
69	3
70	1
71	0
72	0
73	1
74	3
75	2
76	2
77	3
78	1
79	0
80	0
81	1
82	3
83	2
84	2
85	3
86	1
87	0
88	0
89	1
90	3
91	2
92	2
93	3
94	1
95	0
96	0
97	1
98	3
99	2
100	2
101	3
102	1
103	0
104	0

n	a(n)
0	0
1	1
2	3
3	2
4	2
5	3
6	1
7	0
8	0
9	1
10	3
11	2
12	2
13	3
14	1
15	0
16	0
17	1
18	3
19	2
20	2
21	3
22	1
23	0
24	0
25	1
26	3
27	2
28	2
29	3
30	1
31	0
32	0
33	1
34	3
35	2
36	2
37	3
38	1
39	0
40	0
41	1
42	3
43	2
44	2
45	3
46	1
47	0
48	0
49	1
50	3
51	2
52	2
53	3
54	1
55	0
56	0
57	1
58	3
59	2
60	2
61	3
62	1
63	0
64	0
65	1
66	3
67	2
68	2
69	3
70	1
71	0
72	0
73	1
74	3
75	2
76	2
77	3
78	1
79	0
80	0
81	1
82	3
83	2
84	2
85	3
86	1
87	0
88	0
89	1
90	3
91	2
92	2
93	3
94	1
95	0
96	0
97	1
98	3
99	2
100	2
101	3
102	1
103	0
104	0

n	a(n)
0	0
1	1
2	3
3	2
4	2
5	3
6	1
7	0
8	0
9	1
10	3
11	2
12	2
13	3
14	1
15	0
16	0
17	1
18	3
19	2
20	2
21	3
22	1
23	0
24	0
25	1
26	3
27	2
28	2
29	3
30	1
31	0
32	0
33	1
34	3
35	2
36	2
37	3
38	1
39	0
40	0
41	1
42	3
43	2
44	2
45	3
46	1
47	0
48	0
49	1
50	3
51	2
52	2
53	3
54	1
55	0
56	0
57	1
58	3
59	2
60	2
61	3
62	1
63	0
64	0
65	1
66	3
67	2
68	2
69	3
70	1
71	0
72	0
73	1
74	3
75	2
76	2
77	3
78	1
79	0
80	0
81	1
82	3
83	2
84	2
85	3
86	1
87	0
88	0
89	1
90	3
91	2
92	2
93	3
94	1
95	0
96	0
97	1
98	3
99	2
100	2
101	3
102	1
103	0
104	0