{"blog_title":"by shigemk2","description":"\u30ea\u30b9\u30c8\u904a\u3073 4-1 \u968e\u4e57 - by shigemk2\u518d\u5e30\u306e\u5b9a\u77f3 \u7d42\u4e86\u6761\u4ef6\u3092\u8abf\u3079\u3001\u7d42\u4e86\u306a\u3089\u521d\u671f\u5024\u3092\u8fd4\u3059 \u5f15\u6570\u306b\u5bfe\u3057\u3066\u4ed5\u4e8b\u3092\u3059\u308b \u5909\u5316\u3055\u305b\u305f\u5f15\u6570\u3068\u5171\u306b\u81ea\u5206\u81ea\u8eab\u3092\u547c\u3073\u51fa\u3059 \u4eca\u56de\u306f\u6570\u5217\u3092lisp\u3067\u8868\u73fe\u3059\u308b\u3002 \u0192(n) = n + \u0192(n - 1), \u0192(0) = 0 (defun arith-prog (n) (cond ((zerop n) 0) (t (+ n (arith-prog (1- n)))))) =>arith-prog (arith-prog 5) 15 (arith-prog 100) 5050 \u0192(n) = 2^n + \u0192(n - 1), \u0192(0) = 0 (defun geom\u2026","provider_name":"Hatena Blog","blog_url":"https://www.shigemk2.com/","categories":["\u8aad\u66f8\u30ce\u30fc\u30c8"],"url":"https://www.shigemk2.com/entry/20120121/1327152376","image_url":"http://ecx.images-amazon.com/images/I/51BZ2NQA92L.jpg","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F20120121%2F1327152376\" title=\"\u30ea\u30b9\u30c8\u904a\u3073 4-2 \u6570\u5217 - by shigemk2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","type":"rich","title":"\u30ea\u30b9\u30c8\u904a\u3073 4-2 \u6570\u5217","published":"2012-01-21 22:26:16","version":"1.0","width":"100%","author_url":"https://blog.hatena.ne.jp/shigemk2/","author_name":"shigemk2","height":"190"}