A074073 Denominators of iterations of Thue-Morse sequence.

1, 4, 8, 256, 32768, 4294967296, 9223372036854775808, 340282366920938463463374607431768211456, 57896044618658097711785492504343953926634992332820282019728792003956564819968

Offset: 0

Author

Eric W. Weisstein, Aug 18 2002

Keywords

• nonn
• frac
• easy

Links

• Amiram Eldar, Table of n, a(n) for n = 0..12
• Eric Weisstein's World of Mathematics, Thue-Morse Constant.

Crossrefs

Cf. A074072 (numerators).

Programs

Mathematica

f[0] = 0; f[n_] := (2^(-2^n))*(2^(2^(n - 1)) - 1)*(2^(2^(n - 1))*f[n - 1] + 1); Denominator@ Array[f, 9, 0] (* Amiram Eldar, Oct 05 2023 *)

Extensions

a(8) from Amiram Eldar, Oct 05 2023