Best-known CA bounds for t=2, v=4

k	N	Best	Methods
2	16	16	Trivial
4	32	16	Product
8	48	22	Product
16	64	27	Product
32	80	31	Product
64	96	36	Product
128	112	40	Product
256	128	47	Product
512	144	52	Product
1024	160	56	Product
2048	176	60	Product
4096	192	67	Product
8192	208	72	Product
16384	224	76	Product
20000	240	79	Product