w="$$\\varphi=";y=n=>{return a=!n?w+"1+\\dots$$":w+"1+\\cfrac1{".repeat(n)+"1+\\ddots"+"}".repeat(n)+"$$"} //base

w="$$\\varphi=";y=n=>{return n?w+"1+\\cfrac1{".repeat(n)+"1+\\ddots"+"}".repeat(n)+"$$":w+"1+\\dots$$"}

y=n=>{return "$$\\varphi="+(n?"1+\\cfrac1{".repeat(n)+"1+\\ddots"+"}".repeat(n)+"$$":"1+\\dots$$")}

y=n=>{return "$$\\varphi="+(n?"1+\\cfrac1{".repeat(n)+"1+\\ddots"+"}".repeat(n):"1+\\dots")+"$$"}

y=n=>"$$\\varphi="+(n?"1+\\cfrac1{".repeat(n)+"1+\\ddots"+"}".repeat(n):"1+\\dots")+"$$"