A046924 - OEIS

%I #13 Jul 23 2021 09:03:08

%S 0,0,1,1,2,1,3,1,3,0,3,1,3,0,4,1,4,0,3,0,4,0,4,1,4,0,5,1,4,0,3,0,6,0,

%T 4,1,4,0,6,1,5,0,5,0,7,0,5,1,5,0,7,0,5,0,4,0,7,0,4,1,4,0,9,1,7,0,5,0,

%U 8,0,4,0,5,0,10,1,7,0,5,0,9,0,5,1,8,0,9,1,7,0,5,0,11,0,6,1,6,0

%N Number of ways to express n as p+2q; p, q = 1 or prime.

%H L. Hodges, <a href="https://www.jstor.org/stable/2690477">A lesser-known Goldbach conjecture</a>, Math. Mag., 66 (1993), 45-47.

%H <a href="/index/Go#Goldbach">Index entries for sequences related to Goldbach conjecture</a>

%K nonn

%O 1,5

%A _David W. Wilson_