Powers of 2

Bit line	Exponent	Bit weight	Max Decimal
1	$2^0$	1	1
2	$2^1$	2	3
3	$2^2$	4	7
4	$2^3$	8	15
5	$2^4$	16	31
6	$2^5$	32	63
7	$2^6$	64	127
8	$2^7$	128	255
9	$2^8$	256	511
10	$2^9$	512	1,023
11	$2^{10}$	1,024	2,047
12	$2^{11}$	2,048	4,095
13	$2^{12}$	4,096	8,191
14	$2^{13}$	8,192	16,383
15	$2^{14}$	16,384	32,767
16	$2^{15}$	32,768	65,535
32	$2^{31}$	2,147,483,648	4,294,967,295