A183868 - cp's OEIS frontend

A183868 a(n) = n + floor(2*sqrt(n+1)); complement of A079524.

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

[3, 5, 7, 8, 9, 11, 12, 14, 15, 16, 17, 19, 20, 21, 23, 24, 25, 26, 27, 29, 30, 31, 32, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 47, 48, 49, 50, 51, 52, 53, 55, 56, 57, 58, 59, 60, 62, 63, 64, 65, 66, 67, 68, 69, 71, 72, 73, 74]

cp's OEIS Frontend

A183868 a(n) = n + floor(2*sqrt(n+1)); complement of A079524.

Table of values

List of values

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

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

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