OFFSET
0,4
COMMENTS
The q-Pochhammer symbol (q; q)_n = Product_{k=1..n} (1 - q^k).
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..114
Eric Weisstein's World of Mathematics, q-Pochhammer Symbol.
FORMULA
MATHEMATICA
Round@Table[(QPochhammer[Sqrt[2], Sqrt[2], n] - QPochhammer[-Sqrt[2], -Sqrt[2], n])/(2 Sqrt[2]), {n, 0, 20}]
CROSSREFS
KEYWORD
sign
AUTHOR
Vladimir Reshetnikov, Sep 12 2016
STATUS
approved