A086104 Primes appearing as concatenation of the last digit of Prime[A086101(n)] and the first digit of Prime[A086101(n)+1].

23, 71, 11, 31, 71, 13, 17, 37, 71, 11, 31, 71, 31, 71, 11, 71, 11, 71, 31, 71, 31, 11, 11, 31, 71, 73, 13, 73, 13, 73, 73, 73, 17, 17, 97, 97, 37, 97, 37, 17, 17, 97, 37, 79, 79, 19, 79, 19, 79, 79, 19, 79, 19, 71, 31, 11, 11, 31, 11, 11, 31, 71, 11, 31, 71, 31, 71, 31, 11

Offset

1,1

Comments

Prime numbers in A166499. - Zak Seidov, Oct 15 2009

Links

Table of n, a(n) for n=1..69.

Mathematica

Select[Table[FromDigits[{IntegerDigits[Prime[n]][[-1]], IntegerDigits[Prime[n+1]][[1]]}], {n, 300}], PrimeQ] (* Zak Seidov, Oct 15 2009 *)

Crossrefs

Cf. A086101.

Sequence in context: A116333 A042040 A073035 * A274050 A274675 A188831

Adjacent sequences: A086101 A086102 A086103 * A086105 A086106 A086107

Keyword

easy,nonn,base

Author

Zak Seidov, Jul 09 2003

Status

approved