Pronic number
= Pronic number
{title2=$n(n+1)$}
A pronic number is the product $n(n+1)$ of consecutive <nonnegative integers>. It is twice a <triangular number>.
= Pronic number
{title2=$n(n+1)$}
A pronic number is the product $n(n+1)$ of consecutive <nonnegative integers>. It is twice a <triangular number>.