A307004 - cp's OEIS frontend

A307004 Numbers k such that phi^e(k) > phi^e(m) for all m < k, where phi^e(k) = A072911(k) is the number of divisors d of k such that d and k are exponentially coprime.

n	a(n)
1	1
2	8
3	32
4	128
5	864
6	2048
7	3456
8	7776
9	31104
10	279936
11	497664
12	1990656
13	4478976
14	17915904
15	62208000
16	97200000
17	362797056
18	559872000
19	874800000
20	1555200000
21	6220800000
22	13996800000
23	55987200000
24	349920000000
25	895795200000
26	1133740800000
27	1399680000000
28	4534963200000

[1, 8, 32, 128, 864, 2048, 3456, 7776, 31104, 279936, 497664, 1990656, 4478976, 17915904, 62208000, 97200000, 362797056, 559872000, 874800000, 1555200000, 6220800000, 13996800000, 55987200000, 349920000000, 895795200000, 1133740800000, 1399680000000, 4534963200000]

cp's OEIS Frontend

A307004 Numbers k such that phi^e(k) > phi^e(m) for all m < k, where phi^e(k) = A072911(k) is the number of divisors d of k such that d and k are exponentially coprime.

Table of values

List of values