Quantum redactiones paginae "Numerus triangularis" differant

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→‎Vide etiam: i seem to love the form "gnotus"
Linea 133:
* [[Numerus tetrahedronalis]] - 3-D versio numeri triangularis.
* [[Numerus quadratus]]
* [[666]] - Numerus triangularis gnotissimusnotissimus.
 
==Nexus externi==