A271478 - cp's OEIS frontend

A271478 If n is even, a(n)=n/2, otherwise 2*n+2.

n	a(n)
0	0
1	4
2	1
3	8
4	2
5	12
6	3
7	16
8	4
9	20
10	5
11	24
12	6
13	28
14	7
15	32
16	8
17	36
18	9
19	40
20	10
21	44
22	11
23	48
24	12
25	52
26	13
27	56
28	14
29	60
30	15
31	64
32	16
33	68
34	17
35	72
36	18
37	76
38	19
39	80
40	20
41	84
42	21
43	88
44	22
45	92
46	23
47	96
48	24
49	100
50	25
51	104
52	26
53	108
54	27
55	112
56	28
57	116
58	29
59	120
60	30
61	124
62	31
63	128
64	32
65	132
66	33
67	136
68	34
69	140
70	35

[0, 4, 1, 8, 2, 12, 3, 16, 4, 20, 5, 24, 6, 28, 7, 32, 8, 36, 9, 40, 10, 44, 11, 48, 12, 52, 13, 56, 14, 60, 15, 64, 16, 68, 17, 72, 18, 76, 19, 80, 20, 84, 21, 88, 22, 92, 23, 96, 24, 100, 25, 104, 26, 108, 27, 112, 28, 116, 29, 120, 30, 124, 31, 128, 32, 132, 33, 136, 34, 140, 35]

cp's OEIS Frontend

A271478 If n is even, a(n)=n/2, otherwise 2*n+2.

Table of values

List of values

n	a(n)
0	0
1	4
2	1
3	8
4	2
5	12
6	3
7	16
8	4
9	20
10	5
11	24
12	6
13	28
14	7
15	32
16	8
17	36
18	9
19	40
20	10
21	44
22	11
23	48
24	12
25	52
26	13
27	56
28	14
29	60
30	15
31	64
32	16
33	68
34	17
35	72
36	18
37	76
38	19
39	80
40	20
41	84
42	21
43	88
44	22
45	92
46	23
47	96
48	24
49	100
50	25
51	104
52	26
53	108
54	27
55	112
56	28
57	116
58	29
59	120
60	30
61	124
62	31
63	128
64	32
65	132
66	33
67	136
68	34
69	140
70	35

n	a(n)
0	0
1	4
2	1
3	8
4	2
5	12
6	3
7	16
8	4
9	20
10	5
11	24
12	6
13	28
14	7
15	32
16	8
17	36
18	9
19	40
20	10
21	44
22	11
23	48
24	12
25	52
26	13
27	56
28	14
29	60
30	15
31	64
32	16
33	68
34	17
35	72
36	18
37	76
38	19
39	80
40	20
41	84
42	21
43	88
44	22
45	92
46	23
47	96
48	24
49	100
50	25
51	104
52	26
53	108
54	27
55	112
56	28
57	116
58	29
59	120
60	30
61	124
62	31
63	128
64	32
65	132
66	33
67	136
68	34
69	140
70	35

n	a(n)
0	0
1	4
2	1
3	8
4	2
5	12
6	3
7	16
8	4
9	20
10	5
11	24
12	6
13	28
14	7
15	32
16	8
17	36
18	9
19	40
20	10
21	44
22	11
23	48
24	12
25	52
26	13
27	56
28	14
29	60
30	15
31	64
32	16
33	68
34	17
35	72
36	18
37	76
38	19
39	80
40	20
41	84
42	21
43	88
44	22
45	92
46	23
47	96
48	24
49	100
50	25
51	104
52	26
53	108
54	27
55	112
56	28
57	116
58	29
59	120
60	30
61	124
62	31
63	128
64	32
65	132
66	33
67	136
68	34
69	140
70	35