OFFSET
0,2
LINKS
Colin Barker, Table of n, a(n) for n = 0..830
Quynh Nguyen, Jean Pedersen, and Hien T. Vu, New Integer Sequences Arising From 3-Period Folding Numbers, Vol. 19 (2016), Article 16.3.1.
Index entries for linear recurrences with constant coefficients, signature (31,-310,1240,-1984,1024).
FORMULA
G.f.: -(704*x^4-544*x^3+174*x^2-20*x+1) / ((x-1)*(2*x-1)*(4*x-1)*(8*x-1)*(16*x-1)). - Colin Barker, Feb 14 2015
a(n) = 1-2^n+4^n-8^n+16^n. - Colin Barker, Feb 15 2015
MAPLE
with(numtheory, cyclotomic):seq(cyclotomic(10, 2^i), i=0..24);
MATHEMATICA
Cyclotomic[10, 2^Range[0, 20]] (* Paolo Xausa, Sep 16 2024 *)
PROG
(PARI) a(n) = polcyclo(10, 2^n) \\ Colin Barker, Feb 14 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Feb 14 2015
STATUS
approved