A247875 - OEIS

A247875 as a simple table

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

[0,2,4,6,8,9,10,12,14,16,17,18,19,20,22,24,25,26, 28,30,32,33,34,35,36,37,38,39,40,41,42,44,46,48, 49,50,51,52,54,56,57,58,60,62,64,65,66,67,68,69, 70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,86]

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

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

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