A276205 - cp's OEIS frontend

A276205 a(0) = a(2) = a(3) = 0. For n>2 a(n) is the smallest nonnegative integer such that there is no arithmetic progression j,k,m,n (of length 4) such that a(j)+a(k)+a(m) = a(n).

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	0
6	2
7	0
8	0
9	0
10	1
11	2
12	1
13	3
14	0
15	0
16	0
17	4
18	0
19	1
20	2
21	2
22	3
23	1
24	4
25	0
26	0
27	1
28	0
29	0
30	0
31	5
32	3
33	0
34	7
35	1
36	0
37	4
38	2
39	4
40	2
41	3
42	5
43	1
44	1
45	4
46	1
47	3
48	0
49	0
50	0
51	1
52	0
53	0
54	2
55	0
56	0
57	0
58	9
59	2
60	8
61	10
62	0
63	4
64	0
65	0
66	0
67	2
68	1
69	7
70	13
71	4
72	12
73	4
74	6
75	7
76	4
77	4
78	2
79	0
80	10
81	2
82	2
83	1
84	3
85	1
86	0
87	0
88	0
89	12
90	0
91	9
92	1
93	0
94	5
95	2
96	1
97	17
98	0
99	3
100	5
101	0
102	1
103	1
104	0
105	0
106	8
107	3
108	0
109	0
110	0
111	15
112	12
113	9
114	10
115	11
116	1
117	5

[0, 0, 0, 1, 0, 0, 2, 0, 0, 0, 1, 2, 1, 3, 0, 0, 0, 4, 0, 1, 2, 2, 3, 1, 4, 0, 0, 1, 0, 0, 0, 5, 3, 0, 7, 1, 0, 4, 2, 4, 2, 3, 5, 1, 1, 4, 1, 3, 0, 0, 0, 1, 0, 0, 2, 0, 0, 0, 9, 2, 8, 10, 0, 4, 0, 0, 0, 2, 1, 7, 13, 4, 12, 4, 6, 7, 4, 4, 2, 0, 10, 2, 2, 1, 3, 1, 0, 0, 0, 12, 0, 9, 1, 0, 5, 2, 1, 17, 0, 3, 5, 0, 1, 1, 0, 0, 8, 3, 0, 0, 0, 15, 12, 9, 10, 11, 1, 5]

cp's OEIS Frontend

A276205 a(0) = a(2) = a(3) = 0. For n>2 a(n) is the smallest nonnegative integer such that there is no arithmetic progression j,k,m,n (of length 4) such that a(j)+a(k)+a(m) = a(n).

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	0
6	2
7	0
8	0
9	0
10	1
11	2
12	1
13	3
14	0
15	0
16	0
17	4
18	0
19	1
20	2
21	2
22	3
23	1
24	4
25	0
26	0
27	1
28	0
29	0
30	0
31	5
32	3
33	0
34	7
35	1
36	0
37	4
38	2
39	4
40	2
41	3
42	5
43	1
44	1
45	4
46	1
47	3
48	0
49	0
50	0
51	1
52	0
53	0
54	2
55	0
56	0
57	0
58	9
59	2
60	8
61	10
62	0
63	4
64	0
65	0
66	0
67	2
68	1
69	7
70	13
71	4
72	12
73	4
74	6
75	7
76	4
77	4
78	2
79	0
80	10
81	2
82	2
83	1
84	3
85	1
86	0
87	0
88	0
89	12
90	0
91	9
92	1
93	0
94	5
95	2
96	1
97	17
98	0
99	3
100	5
101	0
102	1
103	1
104	0
105	0
106	8
107	3
108	0
109	0
110	0
111	15
112	12
113	9
114	10
115	11
116	1
117	5

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	0
6	2
7	0
8	0
9	0
10	1
11	2
12	1
13	3
14	0
15	0
16	0
17	4
18	0
19	1
20	2
21	2
22	3
23	1
24	4
25	0
26	0
27	1
28	0
29	0
30	0
31	5
32	3
33	0
34	7
35	1
36	0
37	4
38	2
39	4
40	2
41	3
42	5
43	1
44	1
45	4
46	1
47	3
48	0
49	0
50	0
51	1
52	0
53	0
54	2
55	0
56	0
57	0
58	9
59	2
60	8
61	10
62	0
63	4
64	0
65	0
66	0
67	2
68	1
69	7
70	13
71	4
72	12
73	4
74	6
75	7
76	4
77	4
78	2
79	0
80	10
81	2
82	2
83	1
84	3
85	1
86	0
87	0
88	0
89	12
90	0
91	9
92	1
93	0
94	5
95	2
96	1
97	17
98	0
99	3
100	5
101	0
102	1
103	1
104	0
105	0
106	8
107	3
108	0
109	0
110	0
111	15
112	12
113	9
114	10
115	11
116	1
117	5

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	0
6	2
7	0
8	0
9	0
10	1
11	2
12	1
13	3
14	0
15	0
16	0
17	4
18	0
19	1
20	2
21	2
22	3
23	1
24	4
25	0
26	0
27	1
28	0
29	0
30	0
31	5
32	3
33	0
34	7
35	1
36	0
37	4
38	2
39	4
40	2
41	3
42	5
43	1
44	1
45	4
46	1
47	3
48	0
49	0
50	0
51	1
52	0
53	0
54	2
55	0
56	0
57	0
58	9
59	2
60	8
61	10
62	0
63	4
64	0
65	0
66	0
67	2
68	1
69	7
70	13
71	4
72	12
73	4
74	6
75	7
76	4
77	4
78	2
79	0
80	10
81	2
82	2
83	1
84	3
85	1
86	0
87	0
88	0
89	12
90	0
91	9
92	1
93	0
94	5
95	2
96	1
97	17
98	0
99	3
100	5
101	0
102	1
103	1
104	0
105	0
106	8
107	3
108	0
109	0
110	0
111	15
112	12
113	9
114	10
115	11
116	1
117	5