First of three consecutive triangular numbers that add up to a perfect square.

A319588

First of three consecutive triangular numbers that add up to a perfect square.

Terms

    a(0) =0a(1) =15a(2) =105a(3) =2016a(4) =11628a(5) =203203a(6) =1152921a(7) =19968040a(8) =113108320a(9) =1957220895a(10) =11084786065a(11) =191793185496

External references