A116064 Powerful numbers (A001694) made of nontrivial runs of identical digits.

7744, 665500, 774400, 5556600, 6655000, 7744000, 55566000, 66550000, 77440000, 447722888, 448855888, 555660000, 665500000, 774400000, 1155775544, 5500002244, 5511005500, 5556600000, 6655000000, 7744000000, 11000004488, 11122233444, 22244466888

Offset

1,1

Comments

A run of length 1 is trivial.

Links

Amiram Eldar, Table of n, a(n) for n = 1..201 (terms below 10^18)

Index entries for sequences related to powerful numbers.

Example

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

Crossrefs

Intersection of A001694 and A033023.

Sequence in context: A116282 A187958 A052050 * A052070 A052099 A079035

Adjacent sequences: A116061 A116062 A116063 * A116065 A116066 A116067

Keyword

nonn,base

Author

Giovanni Resta, Feb 13 2006

Extensions

a(16)-a(23) from Donovan Johnson, Jun 29 2011

Status

approved