A158853 - cp's OEIS frontend

A158853 a(n), a(n+1), a(n+2), for n=5,8,11,... are respectively the numbers of representations of the integers 2^k-2, 2^k, 2^k+2, where k=(n+4)/3, by unordered sums of two odd primes not belonging to A158846.

%I A158853 #4 Jun 02 2025 01:27:44
%S A158853 2,0,3,1,0,1,5,0,3,6,0,7,18,0,8,10,0,21,50,0,26,43,0,67,204,0,79,93,0,
%T A158853 213,398,0,279,445,0,684,1649,0,630,1008,0,2135,4890,0,3063,3681,0,
%U A158853 6852
%N A158853 a(n), a(n+1), a(n+2), for n=5,8,11,... are respectively the numbers of representations of the integers 2^k-2, 2^k, 2^k+2, where k=(n+4)/3, by unordered sums of two odd primes not belonging to A158846.
%Y A158853 A158846 A156537
%K A158853 nonn,uned
%O A158853 11,1
%A A158853 _Vladimir Shevelev_, Mar 28 2009

cp's OEIS Frontend

A158853 a(n), a(n+1), a(n+2), for n=5,8,11,... are respectively the numbers of representations of the integers 2^k-2, 2^k, 2^k+2, where k=(n+4)/3, by unordered sums of two odd primes not belonging to A158846.