A277516 - cp's OEIS frontend

A277516 a(n) = smallest k >= 0 for which there is a sequence n = b_1 < b_2 < ... < b_t = n + k such that b_1 + b_2 +...+ b_t is a perfect square.

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

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

cp's OEIS Frontend

A277516 a(n) = smallest k >= 0 for which there is a sequence n = b_1 < b_2 < ... < b_t = n + k such that b_1 + b_2 +...+ b_t is a perfect square.

Table of values

List of values

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

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

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