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A165790
a(n) = the smallest positive multiple, k, of n that when written in binary, and leading 0's of k are ignored, contains the reversal of the digits of binary n.
1
1, 10, 3, 36, 5, 54, 7, 136, 9, 150, 55, 156, 91, 238, 15, 528, 17, 594, 57, 300, 21, 154, 253, 792, 275, 598, 27, 924, 87, 990, 31, 2080, 33, 2210, 455, 2124, 333, 1330, 741, 2600, 1189, 2394, 215, 308, 45, 1978, 893, 2160, 931, 550, 51, 2236, 689, 1134, 495
OFFSET
1,2
COMMENTS
a(2n-1) = A161980(2n-1), for all n>=1.
LINKS
PROG
(Python)
def A165790(n):
x = 1
while bin(n)[2:][::-1] not in bin(n*x): x += 1
return(n*x) # John Tyler Rascoe, Dec 01 2023
CROSSREFS
Sequence in context: A103219 A260680 A111126 * A077194 A038305 A089478
KEYWORD
base,nonn
AUTHOR
Leroy Quet, Sep 26 2009
EXTENSIONS
Extended by Ray Chandler, Mar 12 2010
STATUS
approved