STATUS
reviewed
approved
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Revision History for A143146
(Bold, blue-underlined text is an addition; faded, red-underlined text is aShowing entries 1-10 | older changes
a(n) is the smallest positive multiple of n that has the same number of 0's as 1's in its binary representation.
(history; published version)
(history; published version)
STATUS
proposed
reviewed
STATUS
editing
proposed
FORMULA
a(n) = n * A351599(n). - Rémy Sigrist, Jul 11 2022
STATUS
approved
editing
LINKS
Michael S. Branicky, <a href="/A143146/b143146_1.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..1000 from Harvey P. Dale)
STATUS
reviewed
approved
STATUS
proposed
reviewed
STATUS
editing
proposed
LINKS
Harvey PMichael S. Dale, Branicky, <a href="/A143146/b143146_1.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..1000</a> from Harvey P. Dale)
PROG
(Python)
def a(n):
m = n
b = bin(m)[2:]
while len(b) != 2*b.count("1"):
m += n
b = bin(m)[2:]
return m
print([a(n) for n in range(1, 61)]) # Michael S. Branicky, May 15 2022
STATUS
approved
editing
STATUS
reviewed
approved