Small Cages Candidates

Five lower bounds that I found for the orders of small cubic cages are given below. The order of a cage of degree k and girth g is denoted n(k,g).

N(3,14) >= 384
N(3,16) >= 960
N(3,17) >= 2176
N(3,18) >= 2560
N(3,20) >= 5376