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Search: id:A110774
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| A110774 |
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Copies of 1 and 3 alternately such that every partial concatenation is a prime. |
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+0
16
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| 11, 3, 11, 33, 1111111, 3333333333, 11111111111111111111111111111111111111111111111111111111111111111111111111111111\ 111111111111111111111
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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11, 113, 11311, etc. are primes.
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CROSSREFS
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Cf. A110775, A110776, A110777, A110778, A112534, A110780, A110781, A110782, A110783, A110788, A110789.
Sequence in context: A083968 A082769 A110435 this_sequence A067063 A075023 A088262
Adjacent sequences: A110771 A110772 A110773 this_sequence A110775 A110776 A110777
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 12 2005
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EXTENSIONS
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The next term is too large to include.
Corrected and extended by Joshua Zucker, Jan 11 2006
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