shmorimo001 https://blog.hatena.ne.jp/shmorimo001/ はなぼくろ https://shmorimo001.hatenadiary.org/ p28 :: Integer -> Integer p28 limit = 1 + (sum $ concat $ map (\x -> p28' limit 1 x) [2,4,6,8]) where p28' limit a b = takeWhile (\x -> x <= limit) $ p28'' a b p28'' a b = (a+b) : p28'' (a+b) (b+8) 669171001 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fshmorimo001.hatenadiary.org%2Fentry%2F20110803%2F1312384440" title=" Problem 28 - はなぼくろ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2011-08-03 00:14:00 rich https://shmorimo001.hatenadiary.org/entry/20110803/1312384440 1.0 100%