written by Dennis Meyers. He describes the Recursive MA in mathematical terms
as "recursive polynomial fit, a technique that uses a small number of past values
of the estimated price and today's price to predict tomorrows price."
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.