A135668 - cp's OEIS frontend

A135668 a(n) = ceiling(n + sqrt(n)).

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

[2, 4, 5, 6, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26, 27, 28, 29, 30, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67]

cp's OEIS Frontend

A135668 a(n) = ceiling(n + sqrt(n)).

Table of values

List of values

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

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

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