A247379 a(n) = gcd(EKG(n),n) with EKG = A064413.

1, 2, 1, 2, 1, 3, 1, 8, 1, 5, 1, 6, 1, 7, 3, 8, 1, 2, 1, 1, 3, 1, 1, 1, 5, 2, 1, 1, 1, 6, 1, 2, 1, 17, 7, 2, 1, 19, 3, 40, 1, 2, 1, 1, 3, 2, 1, 6, 7, 1, 3, 4, 1, 1, 5, 2, 1, 29, 1, 2, 1, 31, 9, 64, 1, 2, 1, 1, 3, 2, 1, 8, 1, 1, 3, 1, 7, 1, 1, 2, 1, 1, 1, 1

Offset

1,2

Comments

a(n) = gcd(A064413(n),n);

a(A247383(n)) = n and a(m) != n for m < A247383(n).

Links

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

Prog

(Haskell)
a247379 n = gcd n $ a064413 n

Crossrefs

Cf. A064413, A152458 (fixed points), A247383.

Sequence in context: A046206 A137753 A134780 * A154819 A104145 A230981

Adjacent sequences: A247376 A247377 A247378 * A247380 A247381 A247382

Keyword

nonn

Author

Reinhard Zumkeller, Sep 15 2014

Status

approved