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A143481 a(n) = the number of positive integers <= A143480(n) and coprime to A143480(n). 2
1, 2, 6, 8, 20, 24, 42, 48, 54, 64, 110, 112, 120, 132, 144, 160, 192, 216, 288, 320, 324, 360, 396, 416, 440, 480, 486, 504, 616, 624, 660, 672, 720, 736, 840, 864, 1008, 1044, 1104, 1120, 1200, 1224, 1260, 1280, 1296, 1320, 1380, 1408, 1512, 1560, 1632, 1680 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

a(n+1) > a(n) for all n.

CROSSREFS

Cf. A143480.

Sequence in context: A140965 A002618 A069553 * A093968 A064713 A162213

Adjacent sequences:  A143478 A143479 A143480 * A143482 A143483 A143484

KEYWORD

nonn

AUTHOR

Leroy Quet Aug 19 2008

EXTENSIONS

Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 09 2008

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Last modified February 14 16:17 EST 2012. Contains 205635 sequences.