One day, one decomposition
A002378: Oblong (or promic, pronic, or heteromecic) numbers: a(n) = n*(n+1)
3D graph #threejs #webGL ➡️ https://decompwlj.com/3Dgraph/Oblong_numbers.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/Oblong_numbers.html
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Un nombre #sphenique est un entier strictement positif qui est le produit de trois facteurs premiers distincts.
110 = 2 x 5 x 11
Un nombre #oblong est le produit de deux entiers naturels consécutifs, c’est-à-dire, n(n + 1)
110 = 10 x 11
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