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1.递增加数列3,15,24,48,…由既是3的正倍数又是比一个完全平方数小1的那些整数组成.这数列的第1994项除以1000的余数是多少?
1. To increase the number of columns 3, 15, 24, 48, ... consists of those integers that are both a positive multiple of 3 and a full square less than 1. What is the remainder of division number 1994 divided by 1000?