Smallest prime of the form concatenation n, 2n, 3n,...kn and 1.

Terms

a(0) =11a(1) =241a(2) =31a(3) =41a(4) =5101a(5) =61a(6) =71a(7) =8161a(8) =9181a(9) =101a(11) =12241a(12) =131a(13) =14281a(14) =151a(15) =1632481a(16) =17341a(17) =181a(18) =191a(19) =2040601a(20) =211a(21) =22441a(22) =234669921151a(23) =241a(24) =251