

A129811


Lesser of consecutive prime pairs whose last digits differ by 4.


0



13, 43, 47, 103, 113, 157, 163, 167, 193, 223, 257, 293, 313, 367, 463, 557, 587, 607, 613, 643, 647, 673, 677, 727, 773, 823, 853, 863, 883, 947, 953, 977, 1093, 1097, 1117, 1187, 1213, 1217, 1303, 1367, 1423, 1483, 1583, 1657, 1663, 1693, 1747, 1777, 1783
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OFFSET

2,1


COMMENTS

Conjecture: The number of terms in this sequence is infinite.


LINKS

Table of n, a(n) for n=2..50.


EXAMPLE

The last digits of the consecutive prime pair 13 and 17 differ by 4 so 13 is in the table.


PROG

(PARI) \d can be 2, 4, 6, 8 primediffd(n, d) = { forprime(x=3, n, y=abs((nextprime(x+1)%10x%10)); if(y==d, print1(x", ") ) ) }


CROSSREFS

Sequence in context: A118857 A118529 A340480 * A108545 A136191 A268483
Adjacent sequences: A129808 A129809 A129810 * A129812 A129813 A129814


KEYWORD

easy,nonn,base,less


AUTHOR

Cino Hilliard, May 19 2007


STATUS

approved



