login
A124393
Numbers whose shortest addition chains unavoidably contain 3.
0
3, 14759, 15449, 26089
OFFSET
1,1
REFERENCES
For a comprehensive list of references see A003313.
CROSSREFS
Sequence in context: A055379 A047777 A195834 * A116182 A155180 A364963
KEYWORD
nonn,more,hard
AUTHOR
Max Alekseyev, Dec 16 2006
STATUS
approved