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Sum of the vertices of ordered 3 prime sided prime triangles.
0

%I #4 Oct 01 2013 17:58:10

%S 22,83,155,235,317,417,511,613,717,809,911,1039,1147,1255,1359,1461,

%T 1607,1733,1831,1937,2045,2185,2307,2445,2549,2675,2813,2947,3063,

%U 3169,3293,3431,3577,3697,3833,3925,4099,4277,4387,4487,4631,4751,4853,4997

%N Sum of the vertices of ordered 3 prime sided prime triangles.

%C See A105100 for definition.

%e The first 3 prime sided prime triangle is

%e 2

%e 3 5

%e 7 11 13

%e The vertices 2,7,13 add to 22, the first entry.

%o (PARI) sumvert3x3(n) = { local(x,j,s); forstep(x=1,n,6, s = prime(x)+ prime(x+3)+ prime(x+5); print1(s",") ) }

%K easy,nonn

%O 1,1

%A _Cino Hilliard_, Apr 07 2005