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A072460
Smallest even nontotient number of which the largest prime divisor equals n-th prime.
1
50, 14, 154, 26, 34, 38, 230, 174, 62, 74, 246, 86, 94, 318, 118, 122, 134, 142, 146, 158, 830, 534, 194, 202, 206, 214, 218, 678, 254, 1310, 274, 278, 298, 302, 314, 326, 334, 1730, 1074, 362, 1146, 386, 394, 398, 422, 446, 454, 458, 2330, 1434, 482, 1506
OFFSET
3,1
LINKS
FORMULA
a(n) = Min{x; A006530[A005277(x)=prime(n)=A000040(n), n>2}.
EXAMPLE
First even nontotient of which largest prime-factor is p(31)=127, equals 254=A005277[41], the 41st, a(31)=254; 2 and 3 are never largest prime factors of even nontotient numbers.
CROSSREFS
Sequence in context: A048178 A317619 A330848 * A248128 A033370 A090691
KEYWORD
nonn
AUTHOR
Labos Elemer, Jun 19 2002
STATUS
approved