2n + 1
Each succeeding term is one more than twice the previous one.
Chat with our AI personalities
The pattern is twice the previous number plus 1 * 2 * (2x2)+1 = 5 * (5x2)+1 = 11 * (11x2)+1 = 23 * (23x2)+1 = 47
They are consecutive prime numbers 2 3 5 7 11 13 17 19 23 29 31 ..... etc
prime numbers
20 + 3 = 23 23 + 5 = 28 28 / 2 = 14 14 + 3 = 17 17 + 5 = 22 22 / 2 = 11 11 + 3 = 14 14 + 5 = 19 19 / 2 = 9.5
How many subsets are there in 2 3 5 7 11 13 17 19 23?