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A241003 Numbers n such that anti-phi(n) = anti-phi(n+1). 0
2, 8, 14, 20, 27, 32, 284, 297, 362, 717, 842, 1322, 1377, 1725, 1802, 1917, 1982, 2222, 2637, 3410, 4094, 4149, 4850, 5288, 5642, 5654, 5660, 5690, 5750, 5937, 5949, 6237, 7017, 7245, 7377, 7490, 8097, 8217, 8277, 8462, 8774, 9117, 9542, 9897, 10034, 11409, 11810 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Like A001274 but using anti-phi, as defined in A066452, instead of phi, per A000010.

LINKS

Table of n, a(n) for n=1..47.

EXAMPLE

anti-phi(2) = anti-phi(3) = 1.

anti-phi(8) = anti-phi(9) = 4.

anti-phi(14) = anti-phi(15) = 7. Etc.

MAPLE

for n from 1 do

    if A066452(n) = A066452(n+1) then

        printf("%d, \n", n);

    end if;

end do: # R. J. Mathar, Aug 07 2014

CROSSREFS

Cf. A000010, A001274, A066418, A066452.

Sequence in context: A016933 A294960 A101959 * A133229 A161330 A046940

Adjacent sequences:  A241000 A241001 A241002 * A241004 A241005 A241006

KEYWORD

nonn

AUTHOR

Paolo P. Lava, Aug 07 2014

STATUS

approved

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Last modified February 24 11:12 EST 2018. Contains 299603 sequences. (Running on oeis4.)