A131576 - cp's OEIS frontend

A131576 Number of ways to represent n as a sum of an even number of consecutive integers.

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	1
8	0
9	1
10	1
11	1
12	0
13	1
14	1
15	1
16	0
17	1
18	1
19	1
20	0
21	2
22	1
23	1
24	0
25	1
26	1
27	2
28	0
29	1
30	1
31	1
32	0
33	2
34	1
35	1
36	1
37	1
38	1
39	2
40	0
41	1
42	1
43	1
44	1
45	2
46	1
47	1
48	0
49	1
50	1
51	2
52	1
53	1
54	1
55	2
56	0
57	2
58	1
59	1
60	1
61	1
62	1
63	2
64	0
65	2
66	1
67	1
68	1
69	2
70	1
71	1
72	0
73	1
74	1
75	3
76	1
77	1
78	2
79	1
80	0
81	2
82	1
83	1
84	1
85	2
86	1
87	2
88	0
89	1
90	2
91	1
92	1
93	2
94	1
95	2
96	0
97	1
98	1
99	2
100	1
101	1
102	2
103	1
104	0
105	4

[0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 2, 1, 1, 0, 1, 1, 2, 0, 1, 1, 1, 0, 2, 1, 1, 1, 1, 1, 2, 0, 1, 1, 1, 1, 2, 1, 1, 0, 1, 1, 2, 1, 1, 1, 2, 0, 2, 1, 1, 1, 1, 1, 2, 0, 2, 1, 1, 1, 2, 1, 1, 0, 1, 1, 3, 1, 1, 2, 1, 0, 2, 1, 1, 1, 2, 1, 2, 0, 1, 2, 1, 1, 2, 1, 2, 0, 1, 1, 2, 1, 1, 2, 1, 0, 4]

cp's OEIS Frontend

A131576 Number of ways to represent n as a sum of an even number of consecutive integers.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	1
8	0
9	1
10	1
11	1
12	0
13	1
14	1
15	1
16	0
17	1
18	1
19	1
20	0
21	2
22	1
23	1
24	0
25	1
26	1
27	2
28	0
29	1
30	1
31	1
32	0
33	2
34	1
35	1
36	1
37	1
38	1
39	2
40	0
41	1
42	1
43	1
44	1
45	2
46	1
47	1
48	0
49	1
50	1
51	2
52	1
53	1
54	1
55	2
56	0
57	2
58	1
59	1
60	1
61	1
62	1
63	2
64	0
65	2
66	1
67	1
68	1
69	2
70	1
71	1
72	0
73	1
74	1
75	3
76	1
77	1
78	2
79	1
80	0
81	2
82	1
83	1
84	1
85	2
86	1
87	2
88	0
89	1
90	2
91	1
92	1
93	2
94	1
95	2
96	0
97	1
98	1
99	2
100	1
101	1
102	2
103	1
104	0
105	4

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	1
8	0
9	1
10	1
11	1
12	0
13	1
14	1
15	1
16	0
17	1
18	1
19	1
20	0
21	2
22	1
23	1
24	0
25	1
26	1
27	2
28	0
29	1
30	1
31	1
32	0
33	2
34	1
35	1
36	1
37	1
38	1
39	2
40	0
41	1
42	1
43	1
44	1
45	2
46	1
47	1
48	0
49	1
50	1
51	2
52	1
53	1
54	1
55	2
56	0
57	2
58	1
59	1
60	1
61	1
62	1
63	2
64	0
65	2
66	1
67	1
68	1
69	2
70	1
71	1
72	0
73	1
74	1
75	3
76	1
77	1
78	2
79	1
80	0
81	2
82	1
83	1
84	1
85	2
86	1
87	2
88	0
89	1
90	2
91	1
92	1
93	2
94	1
95	2
96	0
97	1
98	1
99	2
100	1
101	1
102	2
103	1
104	0
105	4

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	1
8	0
9	1
10	1
11	1
12	0
13	1
14	1
15	1
16	0
17	1
18	1
19	1
20	0
21	2
22	1
23	1
24	0
25	1
26	1
27	2
28	0
29	1
30	1
31	1
32	0
33	2
34	1
35	1
36	1
37	1
38	1
39	2
40	0
41	1
42	1
43	1
44	1
45	2
46	1
47	1
48	0
49	1
50	1
51	2
52	1
53	1
54	1
55	2
56	0
57	2
58	1
59	1
60	1
61	1
62	1
63	2
64	0
65	2
66	1
67	1
68	1
69	2
70	1
71	1
72	0
73	1
74	1
75	3
76	1
77	1
78	2
79	1
80	0
81	2
82	1
83	1
84	1
85	2
86	1
87	2
88	0
89	1
90	2
91	1
92	1
93	2
94	1
95	2
96	0
97	1
98	1
99	2
100	1
101	1
102	2
103	1
104	0
105	4