login
Minimal order of a *-free dissection of an equilateral triangle of side n into pieces whose sides do not have a common factor.
1

%I #5 Jan 11 2014 17:45:33

%S 1,4,6,7,8,9,9,10,10,11,11,11,12,12,12,12,13,13,13,13,13,14,14,14,14,

%T 14,14,14,15,15,15,15,15,15,15,15,15,16,15,16,16,16,16,16,16,16,16,16,

%U 16,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,18

%N Minimal order of a *-free dissection of an equilateral triangle of side n into pieces whose sides do not have a common factor.

%D M. Szabados, Distances of group tables and latin squares via equilateral triangle dissections, Journal of Combinatorial Theory, Series A, 2014, Issue 1, pp. 1-7.

%Y Cf. A234949.

%K nonn

%O 1,2

%A _N. J. A. Sloane_, Jan 11 2014