Numbers that can be written as (a^2-1)(b^2-1) in four or more distinct ways.
A134857
Numbers that can be written as (a^2-1)(b^2-1) in four or more distinct ways.
Terms
- a(0) =241920a(1) =1048320a(2) =10200960a(3) =25724160a(4) =37255680a(5) =93139200a(6) =123963840a(7) =245044800a(8) =588107520a(9) =819786240a(10) =1407893760a(11) =1871251200a(12) =3758169600a(13) =5886558720a(14) =8553283200a(15) =10783342080a(16) =13470367680a(17) =19769460480a(18) =30791819520a(19) =40446806400
External references
- oeis: A134857