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 A131591 Sum of the squares of the first 3^n primes. 0

%I

%S 4,38,1556,86606,4083404,171658094,6716224724,247782290006,

%T 8763080657420,299863491723614,9990667099305740,325847250824377382,

%U 10445562407382412028,330039152364735149222,10301457052184951857604,318211810358946705058382

%N Sum of the squares of the first 3^n primes.

%e The sum of the squares of the first 3^1 primes = 4+9+25 = 38, the second entry in the sequence.

%t nn=15;With[{prsq=Prime[Range[3^nn]]^2},Table[Total[Take[prsq,3^n]],{n,0,nn}]] (* _Harvey P. Dale_, Mar 08 2014 *)

%o (PARI) sumprimesq(n,b) = { local(x,y,s,a); for(y=0,n, s=0; for(x=1,b^y, s+=prime(x)^2; ); print1(s","); ) }

%K nonn

%O 0,1

%A _Cino Hilliard_, Aug 30 2007

%E More terms from _Harvey P. Dale_, Mar 08 2014

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Last modified April 19 10:35 EDT 2019. Contains 322252 sequences. (Running on oeis4.)