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A073418 Useless numbers: numbers without e, s or u. 0
2, 40, 42, 50, 52, 90, 92, 200, 240, 242, 250, 252, 290, 292, 2000000, 2000002, 2000040, 2000042, 2000050, 2000052, 2000090, 2000092, 2000200, 2000240, 2000242, 2000250, 2000252, 2000290, 2000292, 40000000, 40000002, 40000040 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

M. J. Halm, Sequences (Re)discovered, Mpossibilities 81 (Aug. 2002).

LINKS

Table of n, a(n) for n=1..32.

EXAMPLE

a(2) = 40 because 40 is the second integer without an e, s or u.

CROSSREFS

Sequence in context: A232086 A047660 A213909 * A275547 A269544 A281761

Adjacent sequences:  A073415 A073416 A073417 * A073419 A073420 A073421

KEYWORD

easy,nonn,word

AUTHOR

Michael Joseph Halm, Aug 23 2002

STATUS

approved

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Last modified June 27 15:12 EDT 2017. Contains 288790 sequences.