1,1

Also the sequence of smallest primes such that the sum of the last two digits of three consecutive primes is a prime.

Table of n, a(n) for n=1..56.

a(16)=97 since 97 (mod 100)+101 (mod 100)+103 (mod 100)=97+1+3=101 is a prime.

(PARI) isA180952(n) = isprime(n) && isprime(n%100+(n=nextprime(n+1))%100 + nextprime(n+1)%100)

Sequence in context: A111226 A168224 A084197 * A073681 A155772 A258992

Adjacent sequences: A180949 A180950 A180951 * A180953 A180954 A180955

nonn,easy

Carmine Suriano, Sep 27 2010

Program corrected by Charles R Greathouse IV, Feb 03 2011

approved