Numbers k such that k concatenated with k-5 gives the product of two numbers which differ by 6.

A116125

Numbers k such that k concatenated with k-5 gives the product of two numbers which differ by 6.

Terms

    a(0) =7a(1) =97a(2) =205a(3) =300a(4) =477a(5) =732a(6) =997a(7) =1920a(8) =3157a(9) =9997a(10) =52896a(11) =99997a(12) =120085a(13) =427020a(14) =999997a(15) =8264460a(16) =9999997a(17) =88581312a(18) =99999997a(19) =112000885a(20) =112917765a(21) =143075580a(22) =152863360a(23) =193537077a(24) =233788192a(25) =266755221a(26) =313680096

External references