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Search: id:A076747
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| A076747 |
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List giving pairs of primes of the form 10k+3 and 10k+13. |
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1
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| 3, 13, 13, 23, 43, 53, 73, 83, 103, 113, 163, 173, 223, 233, 283, 293, 373, 383, 433, 443, 643, 653, 673, 683, 733, 743, 853, 863, 1093, 1103, 1153, 1163, 1213, 1223, 1423, 1433, 1483, 1493, 1543, 1553, 1723, 1733, 1993, 2003, 2053, 2063, 2143, 2153
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Except for 3,13, each pair is 30k+13 and 30k+23.
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EXAMPLE
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163 and 173 are in the sequence because both are prime; 193 and 203 aren't because not both are primes.
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PROGRAM
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(PARI) forstep(x=3, 2200, 10, if(isprime(x) && isprime(x+10), print1(x" "x+10" ")))
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CROSSREFS
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Cf. A076746.
Sequence in context: A107733 A054767 A137947 this_sequence A043055 A101235 A045233
Adjacent sequences: A076744 A076745 A076746 this_sequence A076748 A076749 A076750
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KEYWORD
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nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Nov 12 2002
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EXTENSIONS
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Edited by Don Reble (djr(AT)nk.ca), Jun 08 2003
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