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

0,4

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

Prog

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

Crossrefs

Cf. A093879.

Sequence in context: A247288 A135221 A318686 * A255704 A191347 A106234

Adjacent sequences: A214543 A214544 A214545 * A214547 A214548 A214549

Keyword

sign

Author

Reinhard Zumkeller, Jul 20 2012

Status

approved