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Search: id:A062958
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A062958 phi[n+1] < 2phi[n], phi[]=A000010. +0
1
1, 3, 5, 7, 8, 9, 11, 13, 14, 15, 17, 19, 20, 21, 23, 25, 26, 27, 29, 31, 32, 33, 34, 35, 37, 38, 39, 41, 43, 44, 45, 47, 49, 50, 51, 53, 55, 56, 57, 59, 61, 62, 63, 64, 65, 67, 68, 69, 71, 73, 74, 75, 76, 77, 79, 80, 81, 83, 85, 86, 87, 89, 91, 92, 93, 94, 95, 97, 98, 99, 101 (list; graph; listen)
OFFSET

1,2

PROGRAM

(PARI) j=[]; for(n=1, 200, if(eulerphi(n+1)<2*eulerphi(n), j=concat(j, n))); j

CROSSREFS

Cf. A000010.

Sequence in context: A144724 A060462 A072668 this_sequence A153309 A047486 A120212

Adjacent sequences: A062955 A062956 A062957 this_sequence A062959 A062960 A062961

KEYWORD

nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Jul 26 2001

page 1

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Last modified December 17 19:39 EST 2009. Contains 170821 sequences.


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