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Search: id:A154866
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| A154866 |
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Primes n such that smallest digit of n = odd and smallest digit of prime(n) = odd. |
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+0
1
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| 3, 5, 7, 11, 13, 17, 31, 37, 41, 43, 53, 71, 73, 83, 113, 131, 137, 139, 149, 151, 157, 167, 191, 193, 199, 211, 241, 251, 271, 281, 331, 347, 349, 353, 359, 397, 491
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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If prime(n=3)=5, 3=odd and 5=odd, then 3(prime)=a(1). If prime(n=5)=11, 5=odd and 1=1=odd, then 5(prime)=a(2). If prime(n=7)=17, 7=odd and 7>1=odd, then 7(prime)=a(3). If prime(n=11)=31, 1=1=odd and 3>1=odd, then 11(prime)=a(4), etc.
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CROSSREFS
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Cf. A000027, A000040.
Sequence in context: A024883 A024328 A032529 this_sequence A106284 A126145 A092729
Adjacent sequences: A154863 A154864 A154865 this_sequence A154867 A154868 A154869
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KEYWORD
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nonn
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AUTHOR
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Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jan 16 2009
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