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A106409 n XOR (greatest proper divisor of n). 2
0, 3, 2, 6, 4, 5, 6, 12, 10, 15, 10, 10, 12, 9, 10, 24, 16, 27, 18, 30, 18, 29, 22, 20, 28, 23, 18, 18, 28, 17, 30, 48, 42, 51, 36, 54, 36, 53, 42, 60, 40, 63, 42, 58, 34, 57, 46, 40, 54, 43, 34, 46, 52, 45, 60, 36, 42, 39, 58, 34, 60, 33, 42, 96, 76, 99, 66, 102, 82, 101, 70 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

a(n) = n XOR A032742(n);

a(A000040(n)) = A000040(n) - 1 for n>1;

a(2*n) = A048724(n);

a(A022340(n)) = A022340(n) + A032742(A022340(n)).

CROSSREFS

Sequence in context: A121647 A033940 A196047 * A115510 A070264 A163252

Adjacent sequences:  A106406 A106407 A106408 * A106410 A106411 A106412

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 02 2005

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Last modified February 17 08:21 EST 2012. Contains 205998 sequences.