I was given a snippet and can't seem to parse it myself, what's the name of this format and is there a tool that will render it like latex or mathML like this site does?
Sum_{n,k} T(n,k) x^2/n! y^k = 1+ln(Sum((4+y)^binomial(n, 2)*x^n/n!, n=0..infinity))
I'm fairly certain it's just pseudocode. If you were to make it pretty, it would look like $$\sum_{n,k}\frac{T(n,k)x^2y^k}{n!}=1+\ln\left(\sum_{n=0}^{\infty}{\frac{(4+y)^{\binom{n}{2}}x^n}{n!}}\right)$$ This is the exponential generating function for the sequence. The formula that is displayed on the site is actually $$\sum_{n,k}\frac{T(n,k)x^ny^k}{n!}=1+\ln\left(\sum_{n=0}^{\infty}{\frac{(4+y)^{\binom{n}{2}}x^n}{n!}}\right)$$