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A083176 Arithmetic means of rows of A083173. 3

%I #8 Mar 27 2020 06:32:08

%S 2,6,10,21,33,52,68,95,115,174,186,259,287,344,376,477,531,610,670,

%T 781,803,948,996,1157,1261,1414,1442,1605,1635,1808,2032,2227,2329,

%U 2502,2682,2869,2983,3260,3340,3633,3759,3982,4202,4439,4531,4776,5064,5575

%N Arithmetic means of rows of A083173.

%C If p > 3 is a prime then a(p) = prime(p)*(p+1)/2.

%F a(n) = A083175(n)/n.

%o (PARI) for(i=1,120,p=prime(i);s=p*((i-1)*(i))/2;t=sum(k=1,i-1,p*k);k=i;while(denominator((s+k*p)/i)>1,k++);t+=k*p;print1(t/i,",")) \\ Lambert Herrgesell (zero815(AT)googlemail.com), Dec 30 2005

%Y Cf. A083173, A083174, A083175.

%K nonn

%O 1,1

%A _Amarnath Murthy_, Apr 26 2003

%E More terms from Lambert Herrgesell (zero815(AT)googlemail.com), Dec 30 2005

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Last modified August 13 14:18 EDT 2024. Contains 375142 sequences. (Running on oeis4.)