#separator:tab
#html:false
#tags column:4
1 + 1	2		facts-doubles
Half of 2	1		facts-doubles
2 + 2	4		facts-doubles
Half of 4	2		facts-doubles
3 + 3	6		facts-doubles
Half of 6	3		facts-doubles
4 + 4	8		facts-doubles
Half of 8	4		facts-doubles
5 + 5	10		facts-doubles
Half of 10	5		facts-doubles
6 + 6	12		facts-doubles
Half of 12	6		facts-doubles
7 + 7	14		facts-doubles
Half of 14	7		facts-doubles
8 + 8	16		facts-doubles
Half of 16	8		facts-doubles
9 + 9	18		facts-doubles
Half of 18	9		facts-doubles
10 + 10	20		facts-doubles
Half of 20	10		facts-doubles
11 + 11	22		facts-doubles
Half of 22	11		facts-doubles
12 + 12	24		facts-doubles
Half of 24	12		facts-doubles
13 + 13	26		facts-doubles
Half of 26	13		facts-doubles
14 + 14	28		facts-doubles
Half of 28	14		facts-doubles
15 + 15	30		facts-doubles
Half of 30	15		facts-doubles
16 + 16	32		facts-doubles
Half of 32	16		facts-doubles
17 + 17	34		facts-doubles
Half of 34	17		facts-doubles
18 + 18	36		facts-doubles
Half of 36	18		facts-doubles
19 + 19	38		facts-doubles
Half of 38	19		facts-doubles
20 + 20	40		facts-doubles
Half of 40	20		facts-doubles