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# [Haskell], 21 bytes <!-- language-all: lang-hs --> f=0:scanl((+).(*2))1f [Try it online!][TIO-kl8ykanx] [Haskell]: https://www.haskell.org/ [TIO-kl8ykanx]: https://tio.run/##y0gszk7Nyfn/P83WwKo4OTEvR0NDW1NPQ8tIU9Mw7X9uYmaegq1CbmKBr0JBUWZeiYKKQklidqqCoYGBQtp/AA "Haskell – Try It Online"