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A086060
Concatenation of the larger members of first n pairs of twin primes.
0
5, 57, 5713, 571319, 57131931, 5713193143, 571319314361, 57131931436173, 57131931436173103, 57131931436173103109, 57131931436173103109139, 57131931436173103109139151, 57131931436173103109139151181
OFFSET
3,1
COMMENTS
5713...20832089 is the only prime for n up to 10000.
PROG
(PARI) concattwpr(n) = { y=5; print1(5", "); forprime(x=7, n, if(isprime(x-2), y=eval(concat(Str(y), Str(x))); print1(y", ") ) ) }
CROSSREFS
Sequence in context: A209460 A209522 A213796 * A068003 A295902 A290343
KEYWORD
nonn,base
AUTHOR
Cino Hilliard, Sep 08 2003
STATUS
approved