A214546 First differences of A140472.

1, 1, 0, 2, -1, 1, 0, 4, -3, 1, 0, 2, -1, 1, 0, 8, -7, 1, 0, 2, -1, 1, 0, 4, -3, 1, 0, 2, -1, 1, 0, 16, -15, 1, 0, 2, -1, 1, 0, 4, -3, 1, 0, 2, -1, 1, 0, 8, -7, 1, 0, 2, -1, 1, 0, 4, -3, 1, 0, 2, -1, 1, 0, 32, -31, 1, 0, 2, -1, 1, 0, 4, -3, 1, 0, 2, -1, 1, 0

Offset: 0

Author

Reinhard Zumkeller, Jul 20 2012

Keywords

• sign

Comments

a(n) = A140472(n+1) - A140472(n);

a(A016825(n)) = 0; a(A042965(n)) <> 0;

for n > 0: a(A008586(n)) < 0, a(A005843(n)) <= 0, a(A042968(n)) >= 0;

a(A004273(n)) > 0.

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. A093879.

Programs

Haskell

a214546 n = a214546_list !! n
a214546_list = zipWith (-) (tail a140472_list) a140472_list