GCAHPH4 Triangular (Unknown Cache) in New South Wales, Australia created by Googlehihihi and 737s beta tested

A cache by Googlehihihi and 737s beta tested Message this owner

Hidden : 12/27/2023

Size: Size: micro (micro)

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Geocache Description:

In a list of all positive triangular numbers from 1 to 1000000000 inclusive, how many have their digits sum to another triangular number?

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