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A116064 Powerful numbers (A001694) made of nontrivial runs of identical digits. 1
7744, 665500, 774400, 5556600, 6655000, 7744000, 55566000, 66550000, 77440000, 447722888, 448855888, 555660000, 665500000, 774400000, 1155775544, 5500002244, 5511005500, 5556600000, 6655000000, 7744000000, 11000004488, 11122233444, 22244466888 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

A run of length 1 is trivial.

LINKS

Index entries for sequences related to powerful numbers

EXAMPLE

448855888 = 2^4*13^3*113^2.

CROSSREFS

Cf. A001694, A033023.

Sequence in context: A116282 A187958 A052050 * A052070 A052099 A079035

Adjacent sequences:  A116061 A116062 A116063 * A116065 A116066 A116067

KEYWORD

nonn,base

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 13 2006

EXTENSIONS

a(16)-a(23) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Jun 29 2011

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Last modified February 17 06:27 EST 2012. Contains 205998 sequences.