A112954 Number of numbers m such that phi(m) = n*tau(m), with phi=A000010 and tau=A000005.

7, 9, 10, 9, 7, 17, 4, 17, 14, 15, 7, 19, 2, 16, 20, 21, 0, 29, 0, 29, 9, 13, 7, 32, 7, 11, 23, 21, 7, 39, 0, 19, 17, 4, 11, 44, 2, 0, 11, 41, 7, 24, 2, 19, 30, 11, 0, 55, 4, 23, 7, 21, 7, 46, 9, 27, 4, 11, 0, 61, 0, 0, 27, 29, 9, 30, 2, 10, 19, 31, 0, 57, 2, 9, 27, 4, 4, 30, 2, 50, 29, 9

Offset

1,1

Links

Enrique Pérez Herrero, Table of n, a(n) for n = 1..5000

Crossrefs

Cf. A020491, A020488, A062516, A063469, A063470, A112955, A175667.

Sequence in context: A000510 A262310 A167628 * A031952 A043617 A043696

Adjacent sequences: A112951 A112952 A112953 * A112955 A112956 A112957

Keyword

nonn

Author

Reinhard Zumkeller, Oct 07 2005

Extensions

More terms from Max Alekseyev, Mar 01 2010

Status

approved