649296648000domain: NAppears in sequencesDenominator(sum(i=1,n,1/i^4))/denominator(sum(i=1,n,1/i^2)).at n=12A069046Denominator(sum(i=1,n,1/i^4))/denominator(sum(i=1,n,1/i^2)).at n=13A069046