OFFSET
1,2
COMMENTS
This root is also the fifth smallest of the Pisot numbers.
LINKS
Iain Fox, Table of n, a(n) for n = 1..20000
Eric Weisstein's World of Mathematics, Pisot Number.
Wikipedia, Pisot-Vijayaraghavan number
EXAMPLE
1.501594803539087366377783...
MATHEMATICA
First@ RealDigits[Root[#^6 - #^5 - #^4 + #^2 - 1 &, 2], 10, 105] (* Michael De Vlieger, Oct 23 2017 *)
PROG
(PARI) solve(x=1, 2, x^6 - x^5 - x^4 + x^2 - 1) \\ Michel Marcus, Oct 11 2017
(PARI) { default(realprecision, 20080); x=solve(x=1, 2, x^6 - x^5 - x^4 + x^2 - 1); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b293508.txt", n, " ", d)); }
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
Iain Fox, Oct 11 2017
STATUS
approved