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A107309
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Concatenation of twin primes in reverse order.
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0
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53, 75, 1311, 1917, 3129, 4341, 6159, 7371, 103101, 109107, 139137, 151149, 181179, 193191, 199197, 229227, 241239, 271269, 283281, 313311, 349347, 421419, 433431, 463461, 523521, 571569, 601599, 619617, 643641, 661659, 811809, 823821, 829827, 859857, 883881, 10211019, 10331031, 10511049, 10631061, 10931091, 11531151
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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LINKS
| Chris Caldwell The First 1,008 Twin Primes.
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EXAMPLE
| The twin primes 41 and 43 are concatenated in reverse order to give 4341, which is the sixth term in the sequence.
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MATHEMATICA
| f[{a_, b_}]:=FromDigits[Join[IntegerDigits[b], IntegerDigits[a]]]; f/@Select[Partition[Prime[Range[200]], 2, 1], #[[2]]-#[[1]]==2&] [From Harvey P. Dale, Jan 01 2011]
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CROSSREFS
| Cf. A095958.
Sequence in context: A057667 A160041 A013538 * A039389 A043212 A043992
Adjacent sequences: A107306 A107307 A107308 * A107310 A107311 A107312
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KEYWORD
| nonn,base,less
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AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), May 20 2005
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EXTENSIONS
| More terms from Harvey P. Dale, Jan 01 2011
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