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Problem 189. Sum all integers from 1 to 2^n

Solution 1323559

Submitted on 1 Nov 2017 by Harvey Eldridge
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Test Suite

Test Status Code Input and Output
1   Pass
x = 3; y_correct = 36; assert(isequal(sum_int(x),y_correct))

x = 8 y = 36
2   Pass
x = 7; y_correct = 8256; assert(isequal(sum_int(x),y_correct))

x = 128 y = 8256
3   Pass
x = 10; y_correct = 524800; assert(isequal(sum_int(x),y_correct))

x = 1024 y = 524800
4   Pass
x = 11; y_correct = 2098176; assert(isequal(sum_int(x),y_correct))

x = 2048 y = 2098176
5   Pass
x = 14; y_correct = 134225920; assert(isequal(sum_int(x),y_correct))

x = 16384 y = 134225920
6   Pass
x = 17; y_correct = 8590000128; assert(isequal(sum_int(x),y_correct))

x = 131072 y = 8.5900e+09

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