Smallest composite m such that m and the smallest prime divisor of m begin with n.

Terms

a(0) =121a(1) =20a(2) =33a(3) =4141a(4) =55a(5) =6161a(6) =77a(7) =8051a(8) =9409a(9) =10201a(10) =1111a(11) =120269a(12) =1313a(13) =140209a(14) =150547a(15) =160229a(16) =1717a(17) =180457a(18) =1919a(19) =20002379a(20) =210367a(21) =220417a(22) =2323a(23) =240277a(24) =250247a(25) =260123a(26) =270187a(27) =280157a(28) =2929a(29) =301781