login
A070164
Least m such that cototient(m)-1 = p(n).
0
9, 6, 10, 12, 18, 26, 34, 38, 36, 42, 48, 74, 82, 60, 72, 78, 84, 122, 134, 108, 146, 152, 164, 126, 194, 202, 206, 156, 150, 226, 192, 180, 198, 204, 222, 296, 266, 260, 328, 258, 252, 338, 288, 386, 270, 398, 340, 392, 452, 350, 342, 336, 482, 372, 514, 360
OFFSET
1,1
FORMULA
a(n) = Min{x: A051953(x)-1=n-th prime}.
EXAMPLE
p=59=p(17): cototient[{84,100,116,118}]={59} and the smallest is a(17)=84.
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Apr 26 2002
STATUS
approved