The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A208150 Expansion of (1 + 2*Product_{i>=1} (1 + x^(8*i - 1)))/(-1 + Product_{i>=1} (1 - x^(8*i - 1))). 0
 -2, 3, 0, 0, 0, 0, 0, 0, -3, 0, 0, 0, 0, 0, 0, -4, 3, 0, 0, 0, 0, 0, 0, -3, -3, 0, 0, 0, 0, 0, -4, 2, 3, 0, 0, 0, 0, 0, -3, -9, -3, 0, 0, 0, 0, -4, 1, 5, 3, 0, 0, 0, 0, 1, -15, -9, -3, 0, 0, 0, -4, 0, 6, 5, 3, 0, 0, 0, 5, -20, -21, -12, -3, 0, 0, -4, -1, 16 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS EXAMPLE -3/x^7 - 2 + 3*x -3*x^8 - 4*x^15 + 3*x^16 - 3*x^23 - 3*x^24 - 4*x^30 + ... MATHEMATICA Table[SeriesCoefficient[ Series[(1 + 2*Product[1 + x^(8*i - 1), {i, 1, Infinity}])/(-1 + Product[(1 - x^(8*i - 1)), {i, 1, Infinity}]), {x, 0, 100}], n], {n, 0, 100}] CROSSREFS Cf. A207944, A080054, A142724. Sequence in context: A230807 A173012 A083925 * A045830 A078771 A072771 Adjacent sequences: A208147 A208148 A208149 * A208151 A208152 A208153 KEYWORD sign,less AUTHOR Roger L. Bagula, Feb 23 2012 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified February 3 17:00 EST 2023. Contains 360044 sequences. (Running on oeis4.)