A080723 - cp's OEIS frontend

A080723 a(0) = 1; for n>0, a(n) is taken to be the smallest positive integer greater than a(n-1) which is consistent with the condition "n is a member of the sequence if and only if a(n) == 1 mod 3".

n	a(n)
0	1
1	4
2	5
3	6
4	7
5	10
6	13
7	16
8	17
9	18
10	19
11	20
12	21
13	22
14	23
15	24
16	25
17	28
18	31
19	34
20	37
21	40
22	43
23	46
24	49
25	52
26	53
27	54
28	55
29	56
30	57
31	58
32	59
33	60
34	61
35	62
36	63
37	64
38	65
39	66
40	67
41	68
42	69
43	70
44	71
45	72
46	73
47	74
48	75
49	76
50	77
51	78
52	79
53	82
54	85
55	88
56	91
57	94
58	97
59	100
60	103
61	106
62	109
63	112
64	115
65	118
66	121
67	124

[1, 4, 5, 6, 7, 10, 13, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 28, 31, 34, 37, 40, 43, 46, 49, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 82, 85, 88, 91, 94, 97, 100, 103, 106, 109, 112, 115, 118, 121, 124]

cp's OEIS Frontend

A080723 a(0) = 1; for n>0, a(n) is taken to be the smallest positive integer greater than a(n-1) which is consistent with the condition "n is a member of the sequence if and only if a(n) == 1 mod 3".

Table of values

List of values

n	a(n)
0	1
1	4
2	5
3	6
4	7
5	10
6	13
7	16
8	17
9	18
10	19
11	20
12	21
13	22
14	23
15	24
16	25
17	28
18	31
19	34
20	37
21	40
22	43
23	46
24	49
25	52
26	53
27	54
28	55
29	56
30	57
31	58
32	59
33	60
34	61
35	62
36	63
37	64
38	65
39	66
40	67
41	68
42	69
43	70
44	71
45	72
46	73
47	74
48	75
49	76
50	77
51	78
52	79
53	82
54	85
55	88
56	91
57	94
58	97
59	100
60	103
61	106
62	109
63	112
64	115
65	118
66	121
67	124

n	a(n)
0	1
1	4
2	5
3	6
4	7
5	10
6	13
7	16
8	17
9	18
10	19
11	20
12	21
13	22
14	23
15	24
16	25
17	28
18	31
19	34
20	37
21	40
22	43
23	46
24	49
25	52
26	53
27	54
28	55
29	56
30	57
31	58
32	59
33	60
34	61
35	62
36	63
37	64
38	65
39	66
40	67
41	68
42	69
43	70
44	71
45	72
46	73
47	74
48	75
49	76
50	77
51	78
52	79
53	82
54	85
55	88
56	91
57	94
58	97
59	100
60	103
61	106
62	109
63	112
64	115
65	118
66	121
67	124

n	a(n)
0	1
1	4
2	5
3	6
4	7
5	10
6	13
7	16
8	17
9	18
10	19
11	20
12	21
13	22
14	23
15	24
16	25
17	28
18	31
19	34
20	37
21	40
22	43
23	46
24	49
25	52
26	53
27	54
28	55
29	56
30	57
31	58
32	59
33	60
34	61
35	62
36	63
37	64
38	65
39	66
40	67
41	68
42	69
43	70
44	71
45	72
46	73
47	74
48	75
49	76
50	77
51	78
52	79
53	82
54	85
55	88
56	91
57	94
58	97
59	100
60	103
61	106
62	109
63	112
64	115
65	118
66	121
67	124