10510500domain: NAppears in sequencesValue of Product[k/sd(k,3),k=1..n], where sd[k,b] is the sum of the digits of k represented in base b.at n=14A109490Denominators (numerators are all 1) of the series: 1/1^2, (1/1^2)*(1/(1^2+2^2)), (1/1^2)*(1/(1^2+2^2))*(1/(1^2+2^2+3^2)), ...at n=6A135438