A278818 - cp's OEIS frontend

A278818 a(n) is the least k > n such that k + n is square.

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

[1, 3, 7, 6, 5, 11, 10, 9, 17, 16, 15, 14, 13, 23, 22, 21, 20, 19, 31, 30, 29, 28, 27, 26, 25, 39, 38, 37, 36, 35, 34, 33, 49, 48, 47, 46, 45, 44, 43, 42, 41, 59, 58, 57, 56, 55, 54, 53, 52, 51, 71, 70, 69, 68, 67, 66, 65, 64, 63, 62, 61, 83, 82, 81, 80, 79, 78]

cp's OEIS Frontend

A278818 a(n) is the least k > n such that k + n is square.

Table of values

List of values

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

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

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