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A120231
Split-floor-multiplier sequence (SFMS) using multipliers 2/3 and 3/2. (SFMS is defined at A120229.).
1
1, 3, 2, 6, 7, 4, 10, 5, 13, 15, 16, 8, 19, 9, 22, 24, 11, 12, 28, 30, 14, 33, 34, 36, 37, 17, 18, 42, 43, 20, 46, 21, 49, 51, 23, 54, 55, 25, 26, 60, 27, 63, 64, 29, 67, 69, 31, 32, 73, 75, 76, 78, 35, 81, 82, 84, 38, 87, 39, 40, 91, 41, 94, 96, 97, 44, 100, 45, 103, 105, 47
OFFSET
1,2
COMMENTS
A permutation of the natural numbers.
FORMULA
a(n)=[2n/3] if this is positive and new, else a(n)=[3n/2].
EXAMPLE
a(1)=[3/2]=1 because [2/3] is not positive.
a(2)=[2*3/2]=3.
a(3)=[3*2/3]=2.
CROSSREFS
Sequence in context: A245812 A268826 A182849 * A083362 A182847 A182869
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jun 11 2006
STATUS
approved