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A039775 Number of new fractions m/n, where m is prime, (m,n)=1 and "new" means the value of mn has not occurred before. 2
0, 0, 1, 1, 2, 1, 3, 3, 3, 1, 4, 3, 5, 3, 3, 5, 6, 5, 7, 5, 4, 5, 8, 7, 8, 5, 8, 5, 9, 7, 10, 10, 6, 7, 7, 9, 11, 7, 6, 9, 12, 9, 13, 9, 11, 9, 14, 13, 14, 13, 9, 10, 15, 14, 11, 12, 9, 11, 16, 14, 17, 12, 14, 17, 12, 13, 18, 13, 12, 15, 19, 18, 20, 15, 18, 14, 16, 15, 21, 19, 21, 16 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..82.

CROSSREFS

Cf. A014665, A039776.

Sequence in context: A124770 A264154 A099246 * A178244 A227532 A152534

Adjacent sequences:  A039772 A039773 A039774 * A039776 A039777 A039778

KEYWORD

nonn

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified December 8 19:05 EST 2016. Contains 278948 sequences.