Revision as of 17:45, 15 April 2021 edit Supyovalk (talk \| contribs) Extended confirmed users 16,874 edits m →Other characterizations Tag: Reverted ← Previous edit		Revision as of 17:46, 15 April 2021 edit undo Supyovalk (talk \| contribs) Extended confirmed users 16,874 edits m →Other characterizations: Fixed equation of digital root Tag: Reverted Next edit →
Line 116: 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