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Search: id:A167843
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| 113, 127, 137, 139, 149, 157, 167, 179, 199, 211, 223
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Primes in A135603.
Primes whose structure of digits represent an obtuse angle. The vertex is an internal digit. In the graphic representation the points are connected by imaginary line segments from left to right.
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CROSSREFS
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Cf. A134811, A134951, A134971, A135603, A167841, A167842, A167844, A167845, A167846, A167853.
Sequence in context: A115486 A157885 A054033 this_sequence A159466 A060591 A069488
Adjacent sequences: A167840 A167841 A167842 this_sequence A167844 A167845 A167846
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KEYWORD
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base,more,nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Nov 13 2009
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