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A050391 Reversion of Euler totient function A000010. 3
1, -1, 0, 3, -8, 12, -6, -37, 208, -730, 1708, -1278, -10018, 56782, -163644, 229985, 389830, -3724538, 13460550, -28799694, 12470564, 205544596, -1084748334, 3195484242, -4851317704, -7421547798, 81343472008 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..27.

Index entries for reversions of series

N. J. A. Sloane, Transforms

PROG

(PARI) Vec(serreverse(sum(n=1, 50, moebius(n)*x^n/(1-x^n)^2 + O(x^50)))) \\ Michel Marcus, Sep 25 2017

CROSSREFS

Cf. A050392.

Sequence in context: A058565 A170901 A201882 * A288865 A331069 A161517

Adjacent sequences:  A050388 A050389 A050390 * A050392 A050393 A050394

KEYWORD

sign

AUTHOR

Christian G. Bower, Nov 15 1999

STATUS

approved

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Last modified March 28 10:32 EDT 2020. Contains 333083 sequences. (Running on oeis4.)