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Search: id:A105987
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A105987 Near-repdigit semiprimes with 6 as repeated digit. +0
1
166, 466, 566, 626, 662, 667, 669, 766, 866, 4666, 5666, 6166, 6626, 6646, 6662, 6663, 6667, 6686, 6866, 7666, 46666, 62666, 65666, 66166, 66662, 66667, 66686, 76666, 616666, 626666, 646666, 656666, 662666, 666466, 666566, 666646, 666661, 666662 (list; graph; listen)
OFFSET

1,1

EXAMPLE

a(2)=466 is a term because 466 is a semiprime and all digits are equal to 6 except one.

CROSSREFS

Adjacent sequences: A105984 A105985 A105986 this_sequence A105988 A105989 A105990

Sequence in context: A065210 A038007 A020361 this_sequence A051963 A033675 A011815

KEYWORD

base,nonn

AUTHOR

Shyam Sunder Gupta (guptass(AT)rediffmail.com), Apr 29 2005

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.


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