A090881 - cp's OEIS frontend

A090881 Suppose n=(p1^e1)(p2^e2)... where p1,p2,... are the prime numbers and e1,e2,... are nonnegative integers. Then a(n) = e1 + (e2)4 + (e3)16 + (e4)64 + ... + (ek)(4^(k-1)) + ...

n	a(n)
1	0
2	1
3	4
4	2
5	16
6	5
7	64
8	3
9	8
10	17
11	256
12	6
13	1024
14	65
15	20
16	4
17	4096
18	9
19	16384
20	18
21	68
22	257
23	65536
24	7
25	32
26	1025
27	12
28	66
29	262144
30	21
31	1048576
32	5
33	260
34	4097
35	80
36	10
37	4194304
38	16385
39	1028
40	19
41	16777216
42	69
43	67108864
44	258
45	24
46	65537
47	268435456
48	8
49	128
50	33
51	4100
52	1026

[0, 1, 4, 2, 16, 5, 64, 3, 8, 17, 256, 6, 1024, 65, 20, 4, 4096, 9, 16384, 18, 68, 257, 65536, 7, 32, 1025, 12, 66, 262144, 21, 1048576, 5, 260, 4097, 80, 10, 4194304, 16385, 1028, 19, 16777216, 69, 67108864, 258, 24, 65537, 268435456, 8, 128, 33, 4100, 1026]

cp's OEIS Frontend

A090881 Suppose n=(p1^e1)(p2^e2)... where p1,p2,... are the prime numbers and e1,e2,... are nonnegative integers. Then a(n) = e1 + (e2)4 + (e3)16 + (e4)64 + ... + (ek)(4^(k-1)) + ...

Table of values

List of values

cp's OEIS Frontend

A090881 Suppose n=(p1^e1)(p2^e2)... where p1,p2,... are the prime numbers and e1,e2,... are nonnegative integers. Then a(n) = e1 + (e2)*4 + (e3)*16 + (e4)*64 + ... + (ek)*(4^(k-1)) + ...

Table of values

List of values

A090881 Suppose n=(p1^e1)(p2^e2)... where p1,p2,... are the prime numbers and e1,e2,... are nonnegative integers. Then a(n) = e1 + (e2)4 + (e3)16 + (e4)64 + ... + (ek)(4^(k-1)) + ...