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A089193 Odd numbers n such that 2*n-7 is a prime of the form 4*k+3. 3


%S 5,7,9,13,15,19,25,27,33,37,39,43,45,55,67,69,73,79,85,87,93,99,103,

%T 109,115,117,123,129,135,139,145,157,159,169,177,183,187,193,195,213,

%U 219,223,225,235,237,243,249,253,255,265,277,285,289,297

%N Odd numbers n such that 2*n-7 is a prime of the form 4*k+3.

%D M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988

%D Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta,UTET, CittaStudiEdizioni, Milano 1997

%Y Cf. A002145.

%Y a(n)=A087915(n)+5

%K easy,nonn

%O 1,1

%A _Giovanni Teofilatto_, Dec 08 2003

%E Offset corrected by Arkadiusz Wesolowski, Aug 09 2011

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Last modified May 9 22:46 EDT 2021. Contains 343746 sequences. (Running on oeis4.)