A227187 - OEIS

A227187 as a simple table

n	a(n)
0	0
1	2
2	4
3	6
4	7
5	8
6	10
7	12
8	13
9	14
10	16
11	18
12	19
13	20
14	22
15	24
16	25
17	26
18	27
19	28
20	29
21	30
22	31
23	32
24	34
25	36
26	37
27	38
28	40
29	42
30	43
31	44
32	46
33	48
34	49
35	50
36	51
37	52
38	53
39	54
40	55
41	56
42	58
43	60
44	61
45	62
46	64
47	66
48	67
49	68
50	70
51	72
52	73
53	74
54	75
55	76
56	77
57	78
58	79
59	80
60	82
61	84
62	85
63	86
64	88
65	90
66	91

[0,2,4,6,7,8,10,12,13,14,16,18,19,20,22,24,25,26, 27,28,29,30,31,32,34,36,37,38,40,42,43,44,46,48, 49,50,51,52,53,54,55,56,58,60,61,62,64,66,67,68, 70,72,73,74,75,76,77,78,79,80,82,84,85,86,88,90, 91]

n	a(n)
0	0
1	2
2	4
3	6
4	7
5	8
6	10
7	12
8	13
9	14
10	16
11	18
12	19
13	20
14	22
15	24
16	25
17	26
18	27
19	28
20	29
21	30
22	31
23	32
24	34
25	36
26	37
27	38
28	40
29	42
30	43
31	44
32	46
33	48
34	49
35	50
36	51
37	52
38	53
39	54
40	55
41	56
42	58
43	60
44	61
45	62
46	64
47	66
48	67
49	68
50	70
51	72
52	73
53	74
54	75
55	76
56	77
57	78
58	79
59	80
60	82
61	84
62	85
63	86
64	88
65	90
66	91

n	a(n)
0	0
1	2
2	4
3	6
4	7
5	8
6	10
7	12
8	13
9	14
10	16
11	18
12	19
13	20
14	22
15	24
16	25
17	26
18	27
19	28
20	29
21	30
22	31
23	32
24	34
25	36
26	37
27	38
28	40
29	42
30	43
31	44
32	46
33	48
34	49
35	50
36	51
37	52
38	53
39	54
40	55
41	56
42	58
43	60
44	61
45	62
46	64
47	66
48	67
49	68
50	70
51	72
52	73
53	74
54	75
55	76
56	77
57	78
58	79
59	80
60	82
61	84
62	85
63	86
64	88
65	90
66	91

n	a(n)
0	0
1	2
2	4
3	6
4	7
5	8
6	10
7	12
8	13
9	14
10	16
11	18
12	19
13	20
14	22
15	24
16	25
17	26
18	27
19	28
20	29
21	30
22	31
23	32
24	34
25	36
26	37
27	38
28	40
29	42
30	43
31	44
32	46
33	48
34	49
35	50
36	51
37	52
38	53
39	54
40	55
41	56
42	58
43	60
44	61
45	62
46	64
47	66
48	67
49	68
50	70
51	72
52	73
53	74
54	75
55	76
56	77
57	78
58	79
59	80
60	82
61	84
62	85
63	86
64	88
65	90
66	91