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A167127
Cubes that may be transformed into squares by prefixing with a single nonzero digit.
0
1, 216, 68921, 884736, 1000000, 216000000, 68921000000, 884736000000, 1000000000000, 216000000000000, 68921000000000000, 884736000000000000, 1000000000000000000, 216000000000000000000, 68921000000000000000000, 884736000000000000000000
OFFSET
1,2
EXAMPLE
The cube 1 = 1^3 becomes the square 81 =9^2 by prefixing an 8.
The cube 216 = 6^3 becomes the square 9216 = 96^2 by prefixing a 9.
68921=41^3 becomes 168921=411^2 by prefixing a 1.
CROSSREFS
Sequence in context: A299994 A124009 A134358 * A269821 A268364 A358657
KEYWORD
nonn,base
AUTHOR
Claudio Meller, Oct 28 2009
EXTENSIONS
Slightly edited by R. J. Mathar, Nov 05 2009
a(6) corrected and a(11)-a(16) from Donovan Johnson, Feb 19 2011
STATUS
approved