EntityQ975166· pop 34· linked from 250 articlestetrahedral numberSign in to savepolyhedral number representing a tetrahedronConnectionsprime numberEntitycubeEntityfigurate numberEntityautomorphic numberEntitynatural numberEntity20Entitydigital object identifierEntitydigitEntitybinary numeral systemEntityInternational Standard Serial NumberEntityexponentiationEntitynumeral systemEntitydimensionEntityseriesEntityfactorialEntity35EntitypyramidEntity56Entitythree-dimensional spaceEntitytetrahedronEntityCategoriesFigurate numbersSimplex numbersTetrahedra