[" The sum of the first "n" terms of the...

[" The sum of the first "n" terms of the series "1^(2)+22^(2)+3^(2)+24^(2)+5^(2)+2*6],[" n is even.When "n" is odd the sum is "],[[" (1) "(3n(n+1))/(2)," (2) "(n^(2)(n+1))/(2)],[" 3) "(n(n+1)^(2))/(4)," (4) "[(n(n+1))/(2)]^(2)]]

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