login
Expansion of Product_{i=0..m-1} (1 + x^(4*i+1)) for m = 9.
1

%I #12 Jan 03 2021 21:16:09

%S 1,1,0,0,0,1,1,0,0,1,1,0,0,1,2,1,0,1,2,1,0,1,3,2,0,1,3,3,1,1,4,4,1,1,

%T 4,5,2,0,4,7,3,0,3,7,5,1,3,8,6,1,2,8,8,2,2,8,9,3,1,7,11,5,1,7,11,6,1,

%U 5,12,8,1,4,11,9,2,3,11,11,3,2,9,11,4,1,8,12,5,1,6,11,7,1,5,11,7,1,3,9,8,2,2

%N Expansion of Product_{i=0..m-1} (1 + x^(4*i+1)) for m = 9.

%H Nathaniel Johnston, <a href="/A170972/b170972.txt">Table of n, a(n) for n = 0..153</a> (full sequence)

%F a(n) = a(153-n). - _Rick L. Shepherd_, Mar 01 2013

%t CoefficientList[Series[Product[1+x^(4i+1),{i,0,8}],{x,0,100}],x] (* _Harvey P. Dale_, Jun 17 2013 *)

%Y Cf. A169975, A170966-A170984.

%K nonn,fini,full,easy

%O 0,15

%A _N. J. A. Sloane_, Aug 29 2010