A080276 - cp's OEIS frontend

A080276 Variation on Connell sequence (A001614). In this one, a(1)=1, terms a(n) onwards are generated in "blocks" as the next a(n-1) odd numbers > a(n-1) if the previous block ends with a(n-1) even and the next a(n-1) even numbers > a(n-1) if the previous block ends with a(n-1) odd.

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	8
7	10
8	12
9	14
10	15
11	17
12	19
13	21
14	23
15	25
16	27
17	29
18	31
19	33
20	35
21	37
22	39
23	41
24	42
25	44
26	46
27	48
28	50
29	52
30	54
31	56
32	58
33	60
34	62
35	64
36	66
37	68
38	70
39	72
40	74
41	76
42	78
43	80
44	82
45	84
46	86
47	88
48	90
49	92
50	94
51	96
52	98
53	100
54	102
55	104
56	106
57	108
58	110
59	112
60	114
61	116
62	118
63	120
64	122
65	123
66	125

[1, 2, 3, 5, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 123, 125]

cp's OEIS Frontend

A080276 Variation on Connell sequence (A001614). In this one, a(1)=1, terms a(n) onwards are generated in "blocks" as the next a(n-1) odd numbers > a(n-1) if the previous block ends with a(n-1) even and the next a(n-1) even numbers > a(n-1) if the previous block ends with a(n-1) odd.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	8
7	10
8	12
9	14
10	15
11	17
12	19
13	21
14	23
15	25
16	27
17	29
18	31
19	33
20	35
21	37
22	39
23	41
24	42
25	44
26	46
27	48
28	50
29	52
30	54
31	56
32	58
33	60
34	62
35	64
36	66
37	68
38	70
39	72
40	74
41	76
42	78
43	80
44	82
45	84
46	86
47	88
48	90
49	92
50	94
51	96
52	98
53	100
54	102
55	104
56	106
57	108
58	110
59	112
60	114
61	116
62	118
63	120
64	122
65	123
66	125

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	8
7	10
8	12
9	14
10	15
11	17
12	19
13	21
14	23
15	25
16	27
17	29
18	31
19	33
20	35
21	37
22	39
23	41
24	42
25	44
26	46
27	48
28	50
29	52
30	54
31	56
32	58
33	60
34	62
35	64
36	66
37	68
38	70
39	72
40	74
41	76
42	78
43	80
44	82
45	84
46	86
47	88
48	90
49	92
50	94
51	96
52	98
53	100
54	102
55	104
56	106
57	108
58	110
59	112
60	114
61	116
62	118
63	120
64	122
65	123
66	125

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	8
7	10
8	12
9	14
10	15
11	17
12	19
13	21
14	23
15	25
16	27
17	29
18	31
19	33
20	35
21	37
22	39
23	41
24	42
25	44
26	46
27	48
28	50
29	52
30	54
31	56
32	58
33	60
34	62
35	64
36	66
37	68
38	70
39	72
40	74
41	76
42	78
43	80
44	82
45	84
46	86
47	88
48	90
49	92
50	94
51	96
52	98
53	100
54	102
55	104
56	106
57	108
58	110
59	112
60	114
61	116
62	118
63	120
64	122
65	123
66	125