(Q190890)

English

centered triangular number

centered figurate number that represents a triangle with a dot in the center and all other dots surrounding the center in successive triangular layers

In more languages

edit

Statements

instance of

type of integer

0 references

subclass of

centered polygonal number

series ordinal

3

followed by

centered square number

0 references

defining formula

C_{3,n}={\frac {3}{2}}n(n-1)+1={{3n^{2}-3n+2} \over 2}

0 references

in defining formula

n

0 references

maintained by WikiProject

WikiProject Mathematics

0 references

Identifiers

1 reference

28 October 2013

CenteredTriangularNumber

1 reference

imported from Wikimedia project

English Wikipedia

Microsoft Academic ID

14688073

0 references

OEIS ID

A005448

0 references

(Q190890)

centered triangular number

Statements

Identifiers

Sitelinks

Wikipedia(14 entries)

Wikibooks(0 entries)

Wikinews(0 entries)

Wikiquote(0 entries)

Wikisource(0 entries)

Wikiversity(0 entries)

Wikivoyage(0 entries)

Wiktionary(0 entries)

Multilingual sites(0 entries)