|
%I #3 Apr 05 2012 18:15:23
%S 1,5,40,259,1727,11677,78887,532826,3599266,24313336,164238089,
%T 1109439854,7494345348,50624835011,341974359592
%N a(n) = term (1,1) in M^n * [1,0,0,0,...]; M = parity check matrix for the binary Golay code.
%C a(n)/a(n-1) tends to 6.7550711321...
%D Mathworld, Golay Code
%F a(n) = term (1,1) in M^n * [1,0,0,0,...]; M = parity check matrix for the binary Golay code.
%e M = the 11 by 12 matrix:
%e 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1;
%e 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1;
%e 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0;
%e 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 0;
%e 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0;
%e 1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1;
%e 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0;
%e 1, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0;
%e 1, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1;
%e 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1;
%e 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1;
%e a(3) = 40 = term (1,1) in M^3.
%K nonn
%O 1,2
%A _Gary W. Adamson_ & _Roger L. Bagula_, Mar 07 2009
|
