OFFSET
1,1
COMMENTS
Numbers n such that when we start from k = n, and apply in any combination the nondeterministic maps k -> k - k/p and k -> k + k/p, (where p can be any of the odd prime factors of k), a power of 2 will appear no later than after two such steps, and on some of the combinations a power of 2 will appear after exactly two steps.
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jul 09 2020
STATUS
approved