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A186293 (A007519(n)-1)/2. 2

%I

%S 8,20,36,44,48,56,68,96,116,120,128,140,156,168,176,200,204,216,224,

%T 228,260,284,288,296,300,308,320,336,380,384,404,428,440,464,468,476,

%U 488,504,516,524,548,564,576,596,600,608

%N (A007519(n)-1)/2.

%F a(n) = A186294(n)-1.

%F a(n) = 4*A005123(n).

%t (Select[1 + 8 Range@ 155, PrimeQ] -1)/2 (* _Robert G. Wilson v_ *)

%Y Cf. A186305.

%K nonn,easy

%O 1,1

%A _Marco Matosic_, Feb 17 2011

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Last modified January 30 05:43 EST 2023. Contains 359939 sequences. (Running on oeis4.)