A024879 - cp's OEIS frontend

A024879 a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = [ n/2 ], s = A023531.

n	a(n)
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	1
11	0
12	0
13	1
14	0
15	1
16	0
17	0
18	1
19	0
20	0
21	1
22	1
23	0
24	1
25	0
26	0
27	0
28	2
29	0
30	0
31	1
32	0
33	1
34	0
35	1
36	1
37	0
38	0
39	1
40	1
41	0
42	0
43	1
44	0
45	1
46	1
47	0
48	2
49	0
50	0
51	0
52	1
53	0
54	1
55	1
56	0
57	1
58	1
59	0
60	0
61	1
62	1
63	1
64	0
65	0
66	1
67	1
68	0
69	1
70	1
71	0
72	0
73	2
74	0
75	0
76	0
77	0
78	3
79	0
80	1
81	1
82	0
83	0
84	1
85	1
86	0
87	0
88	1
89	0
90	1
91	2
92	0
93	0
94	1
95	0
96	1
97	1
98	1
99	1
100	0
101	0
102	0
103	2
104	0
105	1
106	0
107	0
108	2
109	1
110	0
111	1
112	1

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

cp's OEIS Frontend

A024879 a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = [ n/2 ], s = A023531.

Table of values

List of values

n	a(n)
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	1
11	0
12	0
13	1
14	0
15	1
16	0
17	0
18	1
19	0
20	0
21	1
22	1
23	0
24	1
25	0
26	0
27	0
28	2
29	0
30	0
31	1
32	0
33	1
34	0
35	1
36	1
37	0
38	0
39	1
40	1
41	0
42	0
43	1
44	0
45	1
46	1
47	0
48	2
49	0
50	0
51	0
52	1
53	0
54	1
55	1
56	0
57	1
58	1
59	0
60	0
61	1
62	1
63	1
64	0
65	0
66	1
67	1
68	0
69	1
70	1
71	0
72	0
73	2
74	0
75	0
76	0
77	0
78	3
79	0
80	1
81	1
82	0
83	0
84	1
85	1
86	0
87	0
88	1
89	0
90	1
91	2
92	0
93	0
94	1
95	0
96	1
97	1
98	1
99	1
100	0
101	0
102	0
103	2
104	0
105	1
106	0
107	0
108	2
109	1
110	0
111	1
112	1

n	a(n)
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	1
11	0
12	0
13	1
14	0
15	1
16	0
17	0
18	1
19	0
20	0
21	1
22	1
23	0
24	1
25	0
26	0
27	0
28	2
29	0
30	0
31	1
32	0
33	1
34	0
35	1
36	1
37	0
38	0
39	1
40	1
41	0
42	0
43	1
44	0
45	1
46	1
47	0
48	2
49	0
50	0
51	0
52	1
53	0
54	1
55	1
56	0
57	1
58	1
59	0
60	0
61	1
62	1
63	1
64	0
65	0
66	1
67	1
68	0
69	1
70	1
71	0
72	0
73	2
74	0
75	0
76	0
77	0
78	3
79	0
80	1
81	1
82	0
83	0
84	1
85	1
86	0
87	0
88	1
89	0
90	1
91	2
92	0
93	0
94	1
95	0
96	1
97	1
98	1
99	1
100	0
101	0
102	0
103	2
104	0
105	1
106	0
107	0
108	2
109	1
110	0
111	1
112	1

n	a(n)
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	1
11	0
12	0
13	1
14	0
15	1
16	0
17	0
18	1
19	0
20	0
21	1
22	1
23	0
24	1
25	0
26	0
27	0
28	2
29	0
30	0
31	1
32	0
33	1
34	0
35	1
36	1
37	0
38	0
39	1
40	1
41	0
42	0
43	1
44	0
45	1
46	1
47	0
48	2
49	0
50	0
51	0
52	1
53	0
54	1
55	1
56	0
57	1
58	1
59	0
60	0
61	1
62	1
63	1
64	0
65	0
66	1
67	1
68	0
69	1
70	1
71	0
72	0
73	2
74	0
75	0
76	0
77	0
78	3
79	0
80	1
81	1
82	0
83	0
84	1
85	1
86	0
87	0
88	1
89	0
90	1
91	2
92	0
93	0
94	1
95	0
96	1
97	1
98	1
99	1
100	0
101	0
102	0
103	2
104	0
105	1
106	0
107	0
108	2
109	1
110	0
111	1
112	1