EntityQ674928· pop 29· linked from 301 articlespentagonal numberSign in to savepolygonal numberConnectionsprime numberEntityarithmetic progressionEntityOn-Line Encyclopedia of Integer SequencesEntityfigurate numberEntityautomorphic numberEntityLeonhard EulerEntitynatural numberEntityQ36977Entitydigital object identifierEntitybinary numeral systemEntitydigitEntity22EntityexponentiationEntity70Entitynumeral systemEntitypentagonEntitydimensionEntityseriesEntityfactorialEntity35EntityCategoriesFigurate numbers