Revision as of 17:46, 15 April 2021 edit Supyovalk (talk \| contribs) Extended confirmed users 16,874 edits m →Other characterizations: Fixed equation of digital root Tag: Reverted ← Previous edit		Revision as of 18:40, 15 April 2021 edit undo David Eppstein (talk \| contribs) Autopatrolled, Administrators 235,724 edits Unsourced original research. Also 0 is not an exception and the indexing should start at 0, not 1. Tag: Undo Next edit →
Line 112: </ref> :<math>\frac{1+z}{(1-z)\left(z^2 - 34z + 1\right)} = 1 + 36z + 1225 z^2 + \cdots</math> ~~The [[Digital root]] of every Square triangular number (expect 0) is 1 if the number has a even place in the series and 9 if it has odd place.~~ *That can written as: ~~:<math>DR(N_k)= 8 ((k-1) % 2)+1</math> (with the expection of <math>DR(N_0)=0</math>)~~ ==Numerical data==

Square triangular number: Difference between revisions