A076404 Odd/even-parity of n-th perfect power.

1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0

Offset

1,1

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

C. J. Glasby, S. P. Glasby, F. Pleijel, Worms by number, Proc. Roy. Soc. B, Proc. Biol. Sci. 275 (1647) (2008) 2071-2076.

Eric Weisstein's World of Mathematics, Perfect Powers.

Formula

A001597(n) mod 2.

Prog

(Haskell)
a076404 = (`mod` 2) . a001597  -- Reinhard Zumkeller, Oct 04 2012

Crossrefs

Sequence in context: A373549 A181406 A285252 * A317961 A010059 A143580

Adjacent sequences: A076401 A076402 A076403 * A076405 A076406 A076407

Keyword

nonn

Author

Reinhard Zumkeller, Oct 09 2002

Status

approved