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).

31, 47, 62, 63, 71, 79

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