OFFSET
1,2
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..657
FORMULA
a(n) = 2^A053048(n). - Amiram Eldar, Aug 17 2024
EXAMPLE
For n = 10, the initial value is 10! = 3628800 and the iteration chain is {3628800, 829440, 221184, 73728, 24576, 8192, 4096, 2048, 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 1}. The first power of 2 is the 6th element, arising after 5 iterations of phi, and its value is 8192.
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Feb 25 2000
STATUS
approved