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A113317 Exclusionary biquadrates (fourth powers). 2
16, 81, 256, 2401, 4096, 6561, 331776, 531441, 614656, 1048576, 3111696, 7311616, 7890481, 11316496, 12117361, 21051121, 62742241, 74805201, 1698181681, 4430766096, 6505390336, 11019960576, 11716114081, 479174066176 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
An exclusionary biquadrate m^4 is one sharing no digit in common with its root m made up of distinct digits. Is a subsequence of A113316. Conjectured to be complete.
REFERENCES
H. Ibstedt, Solution to Problem 2623, "Exclusionary Powers", pp. 346-9, Journal of Recreational Mathematics, vol. 32 No.4 2003-4 Baywood NY.
LINKS
CROSSREFS
Sequence in context: A050463 A075578 A113316 * A187457 A056118 A351602
KEYWORD
base,nonn,fini
AUTHOR
Lekraj Beedassy, Oct 26 2005
EXTENSIONS
Corrected by Don Reble, Nov 22 2006
STATUS
approved

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Last modified March 4 22:06 EST 2024. Contains 370532 sequences. (Running on oeis4.)