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A066420 Least m such that nops(invphi(phi(m)))=n. 2
1, 3, 5, 15, 13, 51, 37, 41, 35, 65, 187, 397, 2269, 1059, 313, 73, 337, 247, 937, 185, 689, 1139, 2057, 403, 2827, 485, 323, 1321, 3697, 241, 769, 9001, 433, 7129, 4201, 527, 577, 1297, 1201, 15937, 3313, 3281, 3379, 949, 3121, 7519, 3889, 779, 1763 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

T. D. Noe, Table of n, a(n) for n = 2..1023

FORMULA

a(n) = A049283(A007374(n)) - Max Alekseyev, Apr 12 2005

CROSSREFS

Cf. A049283, A007374.

Cf. A224531, A224532.

Sequence in context: A111869 A093015 A243940 * A102582 A089168 A103127

Adjacent sequences:  A066417 A066418 A066419 * A066421 A066422 A066423

KEYWORD

nonn

AUTHOR

Vladeta Jovovic, Dec 25 2001

EXTENSIONS

More terms from Max Alekseyev, Apr 12 2005

STATUS

approved

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Last modified April 4 05:34 EDT 2020. Contains 333212 sequences. (Running on oeis4.)