Concatenate the n-th and (n+1)st prime.

Terms

a(0) =23a(1) =35a(2) =57a(3) =711a(4) =1113a(5) =1317a(6) =1719a(7) =1923a(8) =2329a(9) =2931a(10) =3137a(11) =3741a(12) =4143a(13) =4347a(14) =4753a(15) =5359a(16) =5961a(17) =6167a(18) =6771a(19) =7173a(20) =7379a(21) =7983a(22) =8389a(23) =8997a(24) =97101a(25) =101103a(26) =103107a(27) =107109a(28) =109113a(29) =113127