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a(n) = A000040(n) - A133578(n).
0

%I #3 Mar 30 2012 18:39:45

%S -2,-3,-4,-4,-3

%N a(n) = A000040(n) - A133578(n).

%F a(n) = A000040(n) - A133578(n)

%e a(1) = 2 - 4 = -2 -> for prime 2

%e a(2) = 3 - 6 = -3 -> for prime 3

%e a(3) = 5 - 9 = -4 -> for prime 5

%e a(4) = 7 - 11 = -4 -> for prime 7

%e a(5) = 11 - 14 = -3 -> for prime 11

%Y Cf. A133578, A000040.

%K sign

%O 1,1

%A _Alexander R. Povolotsky_, Jan 06 2008