Search: id:A061802
Results 1-1 of 1 results found.

%I A061802
%S A061802 2,7,15,27,45,69,99,135,177,229,289,357,435,519,609,709,821,941,1069,
%T A061802 1207,1351,1503,1665,1837,2023,2221,2425,2635,2851,3073,3313,3571,3839,
%U A061802 4115,4403,4703,5011,5331,5661,6001,6353,6713,7085,7469,7859,8255,8665
%N A061802 Sum of n-th row of triangle of primes: 2; 2 3 2; 2 3 5 3 2; 2 3 5 7 5 
               3 2; ...; where n-th row contains 2n+1 terms.
%H A061802 Harry J. Smith, <a href="b061802.txt">Table of n, a(n) for n=0,...,1000</
               a>
%F A061802 a(n) = a(n-1) + p(n) + p(n-1) where p(n) = n-th prime.
%F A061802 a(n) =A007504(n)+A007504(n+1) so asymptotic expression: a(n)~n^2*log(n) 
               - Henry Bottomley (se16(AT)btinternet.com), May 30 2001
%o A061802 (PARI) { n=-1; a=q=0; forprime (p=2, prime(1001), write("b061802.txt", 
               n++, " ", a+=p + q); q=p ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), 
               Jul 28 2009]
%Y A061802 Sequence in context: A029888 A005449 A113422 this_sequence A003452 A000148 
               A147672
%Y A061802 Adjacent sequences: A061799 A061800 A061801 this_sequence A061803 A061804 
               A061805
%K A061802 nonn,easy
%O A061802 0,1
%A A061802 Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 28 2001
%E A061802 More terms from Larry Reeves (larryr(AT)acm.org), May 29 2001

Search completed in 0.001 seconds