A080037 - cp's OEIS frontend

A080037 a(0)=2; for n > 0, a(n) = n + floor(sqrt(4n-3)) + 2.

n	a(n)
0	2
1	4
2	6
3	8
4	9
5	11
6	12
7	14
8	15
9	16
10	18
11	19
12	20
13	22
14	23
15	24
16	25
17	27
18	28
19	29
20	30
21	32
22	33
23	34
24	35
25	36
26	38
27	39
28	40
29	41
30	42
31	44
32	45
33	46
34	47
35	48
36	49
37	51
38	52
39	53
40	54
41	55
42	56
43	58
44	59
45	60
46	61
47	62
48	63
49	64
50	66
51	67
52	68
53	69
54	70
55	71
56	72
57	74
58	75
59	76
60	77
61	78
62	79
63	80
64	81
65	83
66	84
67	85
68	86
69	87
70	88
71	89
72	90
73	92

[2, 4, 6, 8, 9, 11, 12, 14, 15, 16, 18, 19, 20, 22, 23, 24, 25, 27, 28, 29, 30, 32, 33, 34, 35, 36, 38, 39, 40, 41, 42, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 55, 56, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68, 69, 70, 71, 72, 74, 75, 76, 77, 78, 79, 80, 81, 83, 84, 85, 86, 87, 88, 89, 90, 92]

cp's OEIS Frontend

A080037 a(0)=2; for n > 0, a(n) = n + floor(sqrt(4n-3)) + 2.

Table of values

List of values

n	a(n)
0	2
1	4
2	6
3	8
4	9
5	11
6	12
7	14
8	15
9	16
10	18
11	19
12	20
13	22
14	23
15	24
16	25
17	27
18	28
19	29
20	30
21	32
22	33
23	34
24	35
25	36
26	38
27	39
28	40
29	41
30	42
31	44
32	45
33	46
34	47
35	48
36	49
37	51
38	52
39	53
40	54
41	55
42	56
43	58
44	59
45	60
46	61
47	62
48	63
49	64
50	66
51	67
52	68
53	69
54	70
55	71
56	72
57	74
58	75
59	76
60	77
61	78
62	79
63	80
64	81
65	83
66	84
67	85
68	86
69	87
70	88
71	89
72	90
73	92

n	a(n)
0	2
1	4
2	6
3	8
4	9
5	11
6	12
7	14
8	15
9	16
10	18
11	19
12	20
13	22
14	23
15	24
16	25
17	27
18	28
19	29
20	30
21	32
22	33
23	34
24	35
25	36
26	38
27	39
28	40
29	41
30	42
31	44
32	45
33	46
34	47
35	48
36	49
37	51
38	52
39	53
40	54
41	55
42	56
43	58
44	59
45	60
46	61
47	62
48	63
49	64
50	66
51	67
52	68
53	69
54	70
55	71
56	72
57	74
58	75
59	76
60	77
61	78
62	79
63	80
64	81
65	83
66	84
67	85
68	86
69	87
70	88
71	89
72	90
73	92

n	a(n)
0	2
1	4
2	6
3	8
4	9
5	11
6	12
7	14
8	15
9	16
10	18
11	19
12	20
13	22
14	23
15	24
16	25
17	27
18	28
19	29
20	30
21	32
22	33
23	34
24	35
25	36
26	38
27	39
28	40
29	41
30	42
31	44
32	45
33	46
34	47
35	48
36	49
37	51
38	52
39	53
40	54
41	55
42	56
43	58
44	59
45	60
46	61
47	62
48	63
49	64
50	66
51	67
52	68
53	69
54	70
55	71
56	72
57	74
58	75
59	76
60	77
61	78
62	79
63	80
64	81
65	83
66	84
67	85
68	86
69	87
70	88
71	89
72	90
73	92