# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a062820 Showing 1-1 of 1 %I A062820 #6 Dec 15 2017 17:35:15 %S A062820 2,-1,-6,-6,-17,-4,-21,-21,-21,8,-23,-23,-64,-21,26,26,-33,-33,-100, %T A062820 -100,-27,52,-31,-31,-31,70,70,70,-39,-152,-279,-279,-142,-3,146,146, %U A062820 -11,152,319,319,140,-41,-232,-232,-232,-33,-244,-244,-244,-244,-11,-11,-252,-252,5,5,274,545,268,268,-15,278,278 %N A062820 Sum_{k=1..n} p(k)*mu(k). %o A062820 (PARI) j=[]; for(n=1,100,j=concat(j,sum(k=1,n, prime(k)*moebius(k)))); j %K A062820 sign %O A062820 1,1 %A A062820 _Jason Earls_, Jul 20 2001 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE