EntityQ7840129· pop 5· linked from 85 articlestriangular arraySign in to savedoubly indexed sequence of numbers, polynomials, etc., in which each row is only as long as the row's own indexConnectionsInternational Standard Book NumberEntitynatural numberEntitydigital object identifierEntityintegralEntityPascal's triangleEntityJSTOREntitybibcodeEntityQ118398Entityarray data structureEntitytriangular numberEntitybinomial coefficientEntityFibonacci sequenceEntitypartition of a setEntityMathWorldEntitymemory addressEntitytriangular matrixEntityQ22908627EntitysingletonEntityBell numberEntityLU decompositionEntityCategoriesTriangles of numbers