1,2

Vladeta Jovovic, Table of n, a(n) for n = 1..100

a(3)=24 because there are 3 odd solutions (35, 39, 45) to phi(x)=24 and for every k<24 the number of odd solutions to phi(x)=k is unequal to 3.

Cf. A007374.

Sequence in context: A002653 A086768 A007531 this_sequence A101854 A101877 A092348

Adjacent sequences: A130666 A130667 A130668 this_sequence A130670 A130671 A130672

nonn

Franz Vrabec (franz.vrabec(AT)planetuniqa.at), Jun 27 2007