Concatenation of prime p and nextprime(p) is prime -> cycles of 3 steps possible.

A036340

Concatenation of prime p and nextprime(p) is prime -> cycles of 3 steps possible.

Terms

    a(0) =467a(1) =941a(2) =959941a(3) =3396199a(4) =4858943a(5) =5696101a(6) =6475643a(7) =7566133a(8) =7584253a(9) =7592261a(10) =9305281a(11) =9463877a(12) =11430491a(13) =13442243a(14) =14374837a(15) =15941473a(16) =17414497a(17) =17691997a(18) =19584223a(19) =21421849a(20) =22310159a(21) =22808459a(22) =27601163a(23) =29198881

External references