A214653 Where A214551(n) and A214551(n+2) are coprime.

0, 1, 2, 3, 4, 5, 11, 12, 13, 14, 20, 21, 22, 23, 24, 25, 27, 29, 30, 31, 32, 34, 36, 38, 43, 44, 45, 46, 49, 50, 51, 54, 62, 63, 64, 66, 67, 69, 70, 71, 73, 74, 76, 77, 78, 79, 80, 81, 83, 85, 86, 87, 88, 89, 90, 92, 94, 95, 96, 99, 101, 103, 105, 107, 108

Offset

1,3

Comments

A214323(a(n)) = 1.

Links

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

Prog

(Haskell)
import Data.List (elemIndices)
a214653 n = a214653_list !! (n-1)
a214653_list = elemIndices 1 a214323_list

Crossrefs

Sequence in context: A084545 A069908 A130640 * A234142 A116068 A104420

Adjacent sequences: A214650 A214651 A214652 * A214654 A214655 A214656

Keyword

nonn

Author

Reinhard Zumkeller, Jul 24 2012

Status

approved