Math Problem Statement
1,3,3,5,5,5,7,7,7,7...的通项公式是什么
Solution
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Math Problem Analysis
Mathematical Concepts
Number Sequences
Triangular Numbers
Pattern Recognition
Formulas
a_n = 2k - 1
T_k = k(k+1)/2
Theorems
Triangular Number Theorem
Suitable Grade Level
Grades 9-12