摘要: \(a_n=14a_{n-1}-71a_{n-2}+154a_{n-3}-120a_{n-4},a_1=14,a_2=54,a_3=224,a_4=978\) \(a_n=11a_{n-1}-44a_{n-2}+76a_{n-3}-48a_{n-4},a_1=9,a_2=33,a_3=115,a_4 阅读全文
posted @ 2025-07-14 22:13 梦幻の蝶 阅读(22) 评论(0) 推荐(0)
摘要: \(a_n=9a_{n-1}-26a_{n-2}+24a_{n-3},a_1=9,a_2=29,a_3=99\) \(a_n=7a_{n-1}-16a_{n-2}+12a_{n-3},a_1=5,a_2=17,a_3=51\) \(a_n=6a_{n-1}-12a_{n-2}+8a_{n-3},a_ 阅读全文
posted @ 2025-07-14 20:01 梦幻の蝶 阅读(15) 评论(0) 推荐(0)