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%I #10 Apr 02 2020 19:31:03
%S 27,244,1225,4506,13559,35346,82664,177494,355621,672796,1212758,
%T 2097452,3499818,5659535,8902155,13662083,20509867,30184333,43630080,
%U 62040927,86909874,120086243,163840610,220938240,294721720,389203523,509169290,660292594,849262046
%N Graham-Sloane-type lower bound on the size of a ternary (n,3,9) constant-weight code.
%H M. Svanstrom, <a href="http://www.dtr.isy.liu.se/dtr/staff/mattias">A lower bound for ternary constant weight codes</a>, IEEE Trans. on Information Theory, Vol. 43, pp. 1630-1632, Sep. 1997.
%F a(n) = ceiling(binomial(n, w) * 2^w / (2*n + 1)) with w=9.
%K nonn
%O 9,1
%A Mattias Svanstrom (mattias(AT)isy.liu.se)