A243492 Difference A243491(n) - A127301(n).

0, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 2, -2, 0, 7, 4, 0, -7, -4, 7, 0, -7, 0, 0, 0, 4, -4, 0, 14, 8, 0, -14, -8, 14, 0, -14, 0, 29, 19, 25, 16, 14, 10, 5, -10, -29, -19, -5, -16, -25, -14, 47, 26, 17, 0, 0, 0, -17, -47, -26, 37, 12, -12, -37, 0, 0, 0, 8, -8, 0, 28, 16, 0, -28, -16, 28, 0, -28, 0

Offset: 0

Author

Antti Karttunen, Jun 07 2014

Keywords

• sign
• look

Comments

A243490 gives the positions of zeros, which are also the fixed points of A069787. They correspond to the dots shown on the y=0 line of the arcsinh-version of scatter plot.

Links

• Antti Karttunen, Table of n, a(n) for n = 0..6917
• A. Karttunen, On the fixed points of A071661 (Notes in OEIS Wiki)

Crossrefs

Cf. A069787, A243490, A057505, A079438, A123050, A080070, A153239, A153240, A153241, A154477.

Programs

Scheme

(define (A243492 n) (- (A243491 n) (A127301 n)))

Formula

a(n) = A243491(n) - A127301(n) = A127301(A069787(n)) - A127301(n).