题目内容
数列{an}的前14项是4,6,9,10,14,15,21,22,25,26,33,34,35,38,….按此规律,则a16=________.
设等差数列{an}的前n项和为Sn,且S3=-51,S5=-70,
(1)求{an}的通项公式an及前n项和Sn;
(2)求数列{|an|}的前14项和T14.