Square Numbers which are Sum of Consecutive Powers/Mistake

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Source Work

1986: David Wells: Curious and Interesting Numbers:

The Dictionary
$121$


1997: David Wells: Curious and Interesting Numbers (2nd ed.):

The Dictionary
$121$


Mistake

$121$ is the only square number that is the sum of consecutive powers from $1$: $121 = 1 + 3 + 9 + 27 + 81$.


Correction

$400$ also has this property: $400 = 1 + 7 + 49 + 343$.


Sources