A229624 - OEIS

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A229624

Positive integers n for which the length of shortest addition-subtraction chain is smaller than the length of shortest addition chain, i.e., A128998(n) < A003313(n).

1

31, 47, 62, 63, 71, 79

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..6.

CROSSREFS

Sequence in context: A014313 A095318 A130096 * A270781 A075586 A033221

Adjacent sequences: A229621 A229622 A229623 * A229625 A229626 A229627

KEYWORD

nonn,more,hard

AUTHOR

Max Alekseyev, Sep 27 2013

STATUS

approved