16 = 1 − 2 + 34 + 5 + 67 − 89
16 = 98 − 7 − 6 − 5 − 43 − 21
16 = 0^6 + 1^7 + 2^9 − 3^8 + 4^2 + 5^5 + 6^0 + 7^4 + 8^3 + 9^1
16 = 4x4 = 4 + 4 + 4 + 4, Area and Perimeter of a square of side length 4
16 = 6 + 10 = 1 + 15 Sum of 2 triangular numbers
16 = 2^4
4X4 Magic square
12 13 1 8
6 3 15 10
7 2 14 11
9 16 4 5
16 = (1 + 1)(1+1+1+1)
= 2(2+2)
= 33 − 33/3
= 4 × 4 = 4 × 4 + 4 − 4 = (44 − 4) ×.4
= 5 + 55/5
= 6 + (66 − 6)/6
= 7 + 7 + (7 + 7)/7
= 8 + 8
= 9 + 9 − (9 + 9)/9
Moser-de Bruijn sequence: sums of distinct powers of 4
Numbers k such that k^4 + 1 is prime.
Number of Integer partitions of 16: 231
Numbers of edges of regular polygon constructible with unmarked straightedge and compass.
Maximal number of regions obtained by joining 5 points around a circle by straight lines
Representations, Binary to Hexadecimal:
10000_2
121_3
100_4
31_5
24_6
22_7
20_8
17_9
15_11
14_12
13_13
12_14
11_15
10_16
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