# Difference between revisions of "Paper:V.E. Hoggatt, Jr/Triangular numbers"

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− | [[Triangular numbers]]<br /> | + | [[Triangular numbers|$(1.1)$]]<br /> |

+ | [[T(n)=n(n+1)/2|$(1.1)$]]<br /> | ||

+ | [[T(n+1)=T(n)+n+1|$(1.2)$]]<br /> | ||

+ | [[N^2=T(n)+T(n-1)|$(1.3)$]]<br /> | ||

+ | [[T(n)^2=T(T(n))+T(T(n)-1)|$(1.4)$]]<br /> | ||

+ | [[T(n+1)^2-T(n)^2=(n+1)^3|$(1.5)$]]<br /> | ||

+ | |||

[[Category:Paper]] | [[Category:Paper]] |

## Latest revision as of 01:33, 30 May 2017

## V.E. Hoggatt, Jr and Marjorie Bicknell: *Triangular numbers*

Published $1974$, **The Fibonacci Quarterly**.

### Online copies

hosted by the Fibonacci Quarterly