A024890 - cp's OEIS frontend

A024890 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023531, t = A014306.

n	a(n)
2	0
3	0
4	1
5	0
6	1
7	1
8	1
9	1
10	2
11	1
12	2
13	2
14	1
15	2
16	2
17	2
18	2
19	3
20	3
21	2
22	3
23	3
24	2
25	3
26	3
27	3
28	3
29	4
30	4
31	4
32	4
33	3
34	4
35	4
36	3
37	4
38	4
39	3
40	5
41	5
42	5
43	4
44	5
45	5
46	5
47	5
48	4
49	5
50	5
51	5
52	5
53	5
54	5
55	6
56	6
57	5
58	6
59	6
60	5
61	5
62	6
63	6
64	5
65	6
66	6
67	6
68	6
69	5
70	7
71	7
72	7
73	7
74	7
75	6
76	7
77	7
78	7
79	7
80	7
81	7
82	6
83	7
84	7
85	6
86	7
87	7
88	7
89	8
90	7
91	8
92	7
93	8
94	8
95	8
96	8
97	7
98	8
99	7
100	8
101	8
102	8
103	7
104	8
105	8
106	8
107	8
108	9
109	8
110	8
111	9
112	9
113	9

[0, 0, 1, 0, 1, 1, 1, 1, 2, 1, 2, 2, 1, 2, 2, 2, 2, 3, 3, 2, 3, 3, 2, 3, 3, 3, 3, 4, 4, 4, 4, 3, 4, 4, 3, 4, 4, 3, 5, 5, 5, 4, 5, 5, 5, 5, 4, 5, 5, 5, 5, 5, 5, 6, 6, 5, 6, 6, 5, 5, 6, 6, 5, 6, 6, 6, 6, 5, 7, 7, 7, 7, 7, 6, 7, 7, 7, 7, 7, 7, 6, 7, 7, 6, 7, 7, 7, 8, 7, 8, 7, 8, 8, 8, 8, 7, 8, 7, 8, 8, 8, 7, 8, 8, 8, 8, 9, 8, 8, 9, 9, 9]

cp's OEIS Frontend

A024890 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023531, t = A014306.

Table of values

List of values

n	a(n)
2	0
3	0
4	1
5	0
6	1
7	1
8	1
9	1
10	2
11	1
12	2
13	2
14	1
15	2
16	2
17	2
18	2
19	3
20	3
21	2
22	3
23	3
24	2
25	3
26	3
27	3
28	3
29	4
30	4
31	4
32	4
33	3
34	4
35	4
36	3
37	4
38	4
39	3
40	5
41	5
42	5
43	4
44	5
45	5
46	5
47	5
48	4
49	5
50	5
51	5
52	5
53	5
54	5
55	6
56	6
57	5
58	6
59	6
60	5
61	5
62	6
63	6
64	5
65	6
66	6
67	6
68	6
69	5
70	7
71	7
72	7
73	7
74	7
75	6
76	7
77	7
78	7
79	7
80	7
81	7
82	6
83	7
84	7
85	6
86	7
87	7
88	7
89	8
90	7
91	8
92	7
93	8
94	8
95	8
96	8
97	7
98	8
99	7
100	8
101	8
102	8
103	7
104	8
105	8
106	8
107	8
108	9
109	8
110	8
111	9
112	9
113	9

n	a(n)
2	0
3	0
4	1
5	0
6	1
7	1
8	1
9	1
10	2
11	1
12	2
13	2
14	1
15	2
16	2
17	2
18	2
19	3
20	3
21	2
22	3
23	3
24	2
25	3
26	3
27	3
28	3
29	4
30	4
31	4
32	4
33	3
34	4
35	4
36	3
37	4
38	4
39	3
40	5
41	5
42	5
43	4
44	5
45	5
46	5
47	5
48	4
49	5
50	5
51	5
52	5
53	5
54	5
55	6
56	6
57	5
58	6
59	6
60	5
61	5
62	6
63	6
64	5
65	6
66	6
67	6
68	6
69	5
70	7
71	7
72	7
73	7
74	7
75	6
76	7
77	7
78	7
79	7
80	7
81	7
82	6
83	7
84	7
85	6
86	7
87	7
88	7
89	8
90	7
91	8
92	7
93	8
94	8
95	8
96	8
97	7
98	8
99	7
100	8
101	8
102	8
103	7
104	8
105	8
106	8
107	8
108	9
109	8
110	8
111	9
112	9
113	9

n	a(n)
2	0
3	0
4	1
5	0
6	1
7	1
8	1
9	1
10	2
11	1
12	2
13	2
14	1
15	2
16	2
17	2
18	2
19	3
20	3
21	2
22	3
23	3
24	2
25	3
26	3
27	3
28	3
29	4
30	4
31	4
32	4
33	3
34	4
35	4
36	3
37	4
38	4
39	3
40	5
41	5
42	5
43	4
44	5
45	5
46	5
47	5
48	4
49	5
50	5
51	5
52	5
53	5
54	5
55	6
56	6
57	5
58	6
59	6
60	5
61	5
62	6
63	6
64	5
65	6
66	6
67	6
68	6
69	5
70	7
71	7
72	7
73	7
74	7
75	6
76	7
77	7
78	7
79	7
80	7
81	7
82	6
83	7
84	7
85	6
86	7
87	7
88	7
89	8
90	7
91	8
92	7
93	8
94	8
95	8
96	8
97	7
98	8
99	7
100	8
101	8
102	8
103	7
104	8
105	8
106	8
107	8
108	9
109	8
110	8
111	9
112	9
113	9