OFFSET
0,4
COMMENTS
It is known that a(7) >= 2124, and that is conjectured to be the true value.
EXAMPLE
For n = 3 consider p(x) = (x+1)(x-1)^2/(x^4+1). Considered as a power series, this has coefficients +- 1 only. Then p(x)/(1-x)^3 has coefficients bounded by 2 in absolute value.
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Jeffrey Shallit, Feb 01 2017
STATUS
approved