Reverse of smallest prime factor of k = largest prime factor of k+1; a(1)=1.

Terms

a(0) =1a(1) =73a(2) =247a(3) =2573a(4) =2627a(5) =2839a(6) =3379a(7) =5609a(8) =7501a(9) =9113a(10) =9827a(11) =10081a(12) =10877a(13) =11531a(14) =12851a(15) =13949a(16) =14909a(17) =16279a(18) =16367a(19) =17323a(20) =18833a(21) =22151a(22) =26039a(23) =26753a(24) =29749a(25) =31589a(26) =31807a(27) =34099a(28) =35039a(29) =35711