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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 (list; graph; refs; listen; history; text; internal format)
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)%10-x%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

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Last modified June 20 19:02 EDT 2021. Contains 345205 sequences. (Running on oeis4.)