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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

Table of n, a(n) for n=1..24.

CROSSREFS

Sequence in context: A050463 A075578 A113316 * A187457 A056118 A134606

Adjacent sequences:  A113314 A113315 A113316 * A113318 A113319 A113320

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 September 20 12:13 EDT 2019. Contains 327231 sequences. (Running on oeis4.)