Least positive integer k such that k and k*n are terms of A259539.

Terms

a(0) =60a(1) =326940a(2) =728700a(3) =115020a(4) =375258a(5) =70920a(6) =33150a(7) =297990a(8) =2340a(9) =72870a(10) =858a(11) =1416210a(12) =284130a(13) =78978a(14) =91368a(15) =9438a(16) =5547000a(17) =767760a(18) =1182918a(19) =30468a(20) =485208a(21) =60a(22) =7908810a(23) =916188a(24) =21522a(25) =823968a(26) =87720a(27) =390210a(28) =3252a(29) =72870