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URL: https://oeis.org/A115795

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A115795
Integers k such that 2*k XOR 9*k = 11*k.
2
0, 1, 2, 4, 8, 16, 17, 29, 32, 33, 34, 57, 58, 64, 65, 66, 68, 93, 114, 116, 128, 129, 130, 132, 136, 185, 186, 228, 232, 256, 257, 258, 260, 264, 272, 273, 349, 370, 372, 456, 464, 465, 512, 513, 514, 516, 520, 528, 529, 541, 544, 545, 546, 697, 698, 740, 744
OFFSET
1,3
COMMENTS
XOR is A003987.
Integers k such that binomial(11*k,2*k) is odd. - Robert Israel, Jun 20 2018
MAPLE
select(n -> Bits:-And(2*n, 9*n)=0, [$0..1000]); # Robert Israel, Jun 20 2018
MATHEMATICA
Select[Range[0, 750], BitXor[2#, 9#]==11#&] (* Harvey P. Dale, Aug 06 2018 *)
PROG
(PARI) is(n)=bitxor(2*n, 9*n)==11*n \\ Charles R Greathouse IV, Sep 25 2024
CROSSREFS
Cf. A115796 shows this sequence in binary.
Sequence in context: A129851 A061681 A100787 * A048718 A018510 A018366
KEYWORD
nonn
AUTHOR
Antti Karttunen, Feb 01 2006
STATUS
approved