The rule for the sequence is an = xn-1 + xn-2The sequence of numbers, 1, 1, 2, 3, 5, 8, 13, . . . , in which each successive number is equal to the sum of the two preceding numbers.
1, 4, 7, 10, 13, …
The sequence is too short for a definitive answer. It could be:+1, +2, +3 ... Or it could be: *2, *2, *2
x1=0 x2=1 for i > 2, xi= xi-1 + xi-2
1 2 3 4 5 2 5 8 11 14 ... If this is the sequence, the position-to-term rule is 3n-1. However, it could be another sequence depending on the rest of the terms.
the rule is:keep adding double starting from 1
The rule for the sequence is an = xn-1 + xn-2The sequence of numbers, 1, 1, 2, 3, 5, 8, 13, . . . , in which each successive number is equal to the sum of the two preceding numbers.
1, 4, 7, 10, 13, …
The sequence is too short for a definitive answer. It could be:+1, +2, +3 ... Or it could be: *2, *2, *2
x1=0 x2=1 for i > 2, xi= xi-1 + xi-2
1 2 3 4 5 2 5 8 11 14 ... If this is the sequence, the position-to-term rule is 3n-1. However, it could be another sequence depending on the rest of the terms.
The phrase "first difference" is usually associated with a sequence of numbers: a(1), a(2), a(3), a(4), ... . The sequence may have a simple rule for generating the numbers , a complicated rule or, if it is a random sequence, no rule at all.The sequence of first differences is a(2)-a(1), a(3)-a(2), a(4)-a(3), ...
3n - 7
Without further terms in the sequence, it is impossible to determine what the rule in the sequence is.
Lucas sequences are sequences of numbers which are defined by two seeds: U(1) and U(2); and an iteration rule: U(n+2) = U(n) + U(n+1) for n = 1, 2, 3, ... When the two seeds are both 1, the sequence is the well known Fibonacci sequence.
It is Un = 3n - 7.
This is the famous fibonacci sequence, where each term in the sequence is the sum of the previous two. Fn=Fn-1 + Fn-2 F0 = 1 and F1 = 1 are the initial values to begin the sequence. F2 = F1 + F0 = 1 + 1 = 2 F3 = F2 + F1 = 2 + 1 = 3 and so on