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A120235
Split-floor-multiplier sequence (SFMS) using multipliers 2/5 and 5/2. (SFMS is defined at A120229.).
1
2, 5, 1, 10, 12, 15, 17, 3, 22, 4, 27, 30, 32, 35, 6, 40, 42, 7, 47, 8, 52, 55, 9, 60, 62, 65, 67, 11, 72, 75, 77, 80, 13, 85, 14, 90, 92, 95, 97, 16, 102, 105, 107, 110, 18, 115, 117, 19, 122, 20, 127, 130, 21, 135, 140, 142, 23, 147, 24, 152, 155, 25, 160, 26, 165, 167
OFFSET
1,1
COMMENTS
A permutation of the natural numbers.
FORMULA
a(n)=[2n/5] if this is positive and new, else a(n)=[5n/2].
CROSSREFS
Sequence in context: A010588 A085358 A146104 * A323411 A089618 A207629
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jun 11 2006
STATUS
approved