|
|
A281379
|
|
Numbers which are palindromic in their binary reflected Gray code representation.
|
|
4
|
|
|
0, 1, 2, 5, 6, 10, 14, 18, 21, 25, 30, 34, 42, 54, 62, 66, 77, 85, 90, 102, 105, 113, 126, 130, 146, 170, 186, 198, 214, 238, 254, 258, 285, 301, 306, 330, 341, 357, 378, 390, 409, 425, 438, 462, 465, 481, 510, 514, 546, 594, 626, 650, 682, 730, 762, 774, 806, 854, 886, 910, 942
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,3
|
|
COMMENTS
|
A281378 is a subsequence of this sequence.
|
|
LINKS
|
|
|
EXAMPLE
|
34 is in the sequence because the binary reflected Gray code representation of 34 is '110011', which is palindromic.
|
|
MATHEMATICA
|
Select[Range[0, 10^3], Reverse@ # == # &@ Abs[Prepend[Most@ #, 0] - #] &@
|
|
PROG
|
(Python)
def G(n):
....return bin(n^(n/2))[2:]
i=0
j=1
while j<=10000:
....if G(i)==G(i)[::-1]:
........print str(j)+" "+str(i)
........j+=1
....i+=1
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|