Forests and Trees from Nicolas Thiery From Jean-Guillaume Dumas' Sparse Integer Matrix Collection, http://ljk.imag.fr/membres/Jean-Guillaume.Dumas/simc.html TF10 : rank = 99 , 0.0263529 s, Gauss: 0.00382595 TF11 : rank = 216 , 0.136469 s, Gauss: 0.0256469 TF12 : rank = 488 , 0.83511 s, Gauss: 0.295295 TF13 : rank = 1121 , 6.06873 s, Gauss: 4.97585 TF14 : rank = 2644 , 36.9781 s, Gauss: 81.5788 TF15 : rank = 6334 , 229.029 s, Gauss: 1309.48 TF16 : rank = 15437 , 1442.08 s, Gauss: 36000 TF17 : rank = 38132 , 9706.03 s, Gauss: http://www.lapcs.univ-lyon1.fr/~nthiery