A305677 - cp's OEIS frontend

A305677 Number of subsets of {n+1, n+2, ..., A072905(n)-1} whose product has the same squarefree part as n.

n	a(n)
1	1
2	2
3	8
4	1
5	64
6	256
7	2048
8	4
9	1
10	131072
11	262144
12	32
13	8388608
14	33554432
15	134217728
16	1
17	2147483648
18	8
19	34359738368
20	1024
21	549755813888
22	4398046511104
23	17592186044416
24	8192
25	2
26	1125899906842624
27	32
28	65536
29	72057594037927936
30	576460752303423488

[1, 2, 8, 1, 64, 256, 2048, 4, 1, 131072, 262144, 32, 8388608, 33554432, 134217728, 1, 2147483648, 8, 34359738368, 1024, 549755813888, 4398046511104, 17592186044416, 8192, 2, 1125899906842624, 32, 65536, 72057594037927936, 576460752303423488]

cp's OEIS Frontend

A305677 Number of subsets of {n+1, n+2, ..., A072905(n)-1} whose product has the same squarefree part as n.

Table of values

List of values