A072406 - cp's OEIS frontend

A072406 Number of values of k for which C(n,k)-C(n-2,k-1) is odd.

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

[1, 2, 3, 2, 4, 4, 6, 4, 6, 8, 6, 4, 8, 8, 12, 8, 10, 16, 6, 4, 8, 8, 12, 8, 12, 16, 12, 8, 16, 16, 24, 16, 18, 32, 6, 4, 8, 8, 12, 8, 12, 16, 12, 8, 16, 16, 24, 16, 20, 32, 12, 8, 16, 16, 24, 16, 24, 32, 24, 16, 32, 32, 48, 32, 34, 64, 6, 4, 8, 8, 12, 8, 12, 16, 12, 8, 16, 16, 24, 16]

cp's OEIS Frontend

A072406 Number of values of k for which C(n,k)-C(n-2,k-1) is odd.

Table of values

List of values

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

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

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