A371094 - cp's OEIS frontend

A371094 a(n) = m*(2^e) + ((4^e)-1)/3, where m = 3n+1, and e is the 2-adic valuation of m.

n	a(n)
0	1
1	21
2	7
3	21
4	13
5	341
6	19
7	45
8	25
9	117
10	31
11	69
12	37
13	341
14	43
15	93
16	49
17	213
18	55
19	117
20	61
21	5461
22	67
23	141
24	73
25	309
26	79
27	165
28	85
29	725
30	91
31	189
32	97
33	405
34	103
35	213
36	109
37	1877
38	115
39	237
40	121
41	501
42	127
43	261
44	133
45	1109
46	139
47	285
48	145
49	597
50	151
51	309
52	157
53	5461
54	163
55	333
56	169
57	693
58	175
59	357
60	181
61	1493
62	187
63	381
64	193
65	789
66	199

[1, 21, 7, 21, 13, 341, 19, 45, 25, 117, 31, 69, 37, 341, 43, 93, 49, 213, 55, 117, 61, 5461, 67, 141, 73, 309, 79, 165, 85, 725, 91, 189, 97, 405, 103, 213, 109, 1877, 115, 237, 121, 501, 127, 261, 133, 1109, 139, 285, 145, 597, 151, 309, 157, 5461, 163, 333, 169, 693, 175, 357, 181, 1493, 187, 381, 193, 789, 199]

cp's OEIS Frontend

A371094 a(n) = m*(2^e) + ((4^e)-1)/3, where m = 3n+1, and e is the 2-adic valuation of m.

Table of values

List of values