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A026818 Largest digit of n concatenated with smallest digit of n is prime. +0
1
11, 13, 14, 16, 17, 31, 34, 35, 37, 38, 41, 43, 53, 61, 71, 73, 79, 83, 97, 111, 113, 114, 116, 117, 123, 124, 126, 127, 131, 132, 133, 134, 136, 137, 141, 142, 143, 144, 146, 147, 156, 157, 161, 162, 163, 164, 165, 166, 167, 171, 172, 173, 174, 175, 176, 177 (list; graph; listen)
OFFSET

1,1

EXAMPLE

a(3)=14 because 41 is prime. a(8000)=47713 because 71 is prime.

CROSSREFS

Cf. A054054, A054055.

Sequence in context: A038187 A007934 A111347 this_sequence A163140 A048596 A152200

Adjacent sequences: A026815 A026816 A026817 this_sequence A026819 A026820 A026821

KEYWORD

base,easy,nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Jun 25 2003

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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