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Search: id:A028987
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A028987 Repdigit - 1 is prime (next term is 88...8 (72 digits)). +0
15
4, 6, 8, 44, 444, 888, 2222, 8888, 444444, 888888, 444444444, 888888888, 444444444444, 888888888888, 222222222222222222, 444444444444444444444444444444, 44444444444444444444444444444444 (list; graph; listen)
OFFSET

0,1
LINKS

P. De Geest, Repdigits : WONplate 83

CROSSREFS

Cf. A010785.

Adjacent sequences: A028984 A028985 A028986 this_sequence A028988 A028989 A028990

Sequence in context: A108270 A019161 A137026 this_sequence A090938 A087271 A067797

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com)

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Last modified November 8 07:45 EST 2009. Contains 166143 sequences.

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