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

k	N	Best	Verified	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