Numerator of Sum_{k=1..n} (-1)^(k+1)/k^5.A136676Numerator of Sum_{k=1..n} (-1)^(k+1)/k^5.Terms a(0) =1a(1) =31a(2) =7565a(3) =241837a(4) =755989457a(5) =755889457External referencesoeis: A136676