Numbers k such that k concatenated with k+7 gives the product of two numbers which differ by 6.

A116208

Numbers k such that k concatenated with k+7 gives the product of two numbers which differ by 6.

Terms

    a(0) =145a(1) =384a(2) =505a(3) =820a(4) =7680a(5) =20665a(6) =29748a(7) =480340a(8) =6694209a(9) =77854665a(10) =107541513a(11) =109342209a(12) =132231408a(13) =174990384a(14) =183673473a(15) =213017748a(16) =289940833a(17) =326530608a(18) =338353345a(19) =404958673a(20) =448003540a(21) =451671060a(22) =478271265

External references