A186027 Numerators of coefficients of x^2 in continued fraction expansion of A106400.

1, -2, 1, -1, -1, -1, 1, -1, 1, -3, 1, -1, -3, 1, -1, 1, 1, -3, 1, -1, -1, -5, 1, -1, 15, -17, -1, 1, -17, 15, 1, -1, -15, 13, -3, 3, 13, -19, 3, -3, 19, -37, 15, -15, -37, -113, 15, -15, -113, 111, -17, 17, -111, -467, -17, 17, -467, 465, 1, -1, -31, 1

Offset

0,2

Comments

Corresponding denominators are A186028.

Links

Table of n, a(n) for n=0..61.

Guo-Niu Han, Hankel determinant calculus for the Thue-Morse and related sequences, Journal of Number Theory, Volume 147, February 2015, Pages 374-395. See vn p. 376.

Crossrefs

Cf. A186026, A186028.

Sequence in context: A205617 A359888 A204112 * A359250 A322482 A231071

Adjacent sequences: A186024 A186025 A186026 * A186028 A186029 A186030

Keyword

sign

Author

Paul Barry, Feb 10 2011

Extensions

a(0)=1 inserted by Michel Marcus, May 16 2020

Status

approved