Numbers whose square is the product of two distinct tetrahedral numbers A000292.

A152005

Numbers whose square is the product of two distinct tetrahedral numbers A000292.

Terms

    a(0) =2a(1) =140a(2) =280a(3) =1092a(4) =166460a(5) =189070a(6) =665840a(7) =804540a(8) =845460a(9) =34250920a(10) =38336088a(11) =133784560a(12) =138535992a(13) =225792840a(14) =4998790160a(15) =6301258040a(16) =7559616818a(17) =8367691640a(18) =39991371446a(19) =104637102152a(20) =227490888350

External references