login
Numbers n for which there exists only composite number k such that A060715(k) = n and 2*k-1 is prime, but A104272(n) differs from A080359(n).
0

%I #16 Feb 13 2013 23:58:28

%S 3,8,36,55,58,83,129,134,143,155,186,197,207,218,269,295,309,310,361,

%T 362,380,396,412,454,466,473,505,511,514,544,549,556,563,616,631,660,

%U 666,677,683,697,771,781,788,797,812,873,874,881,883,894,906,953

%N Numbers n for which there exists only composite number k such that A060715(k) = n and 2*k-1 is prime, but A104272(n) differs from A080359(n).

%C There exists a prime p=p(n) such that 2*p-1 is prime and A060715(p)=a(n)-1 (cf. comment in A182391).

%Y Cf. A104272, A080359, A164554, A193507, A194184, A194186, A194217, A182366, A182391.

%K nonn

%O 1,1

%A _Vladimir Shevelev_ and _Peter J. C. Moses_, Apr 27 2012