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A241003 Numbers k such that anti-phi(k) = anti-phi(k+1). 1
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
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
Sequence in context: A016933 A294960 A101959 * A133229 A364615 A161330
KEYWORD
nonn
AUTHOR
Paolo P. Lava, Aug 07 2014
STATUS
approved

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Last modified February 23 11:40 EST 2024. Contains 370283 sequences. (Running on oeis4.)