Question

What is the missing number? Please explain and don't give an answer.
4, 13, 40, __, 364, 1093

Answer 1

How you figured it out is just fine! :)

Answer 2

3n + 1
40 = 3*13 + 1
so next number is
3* -- you can do this one

Answer 3

look at the differences

13 - 4 = 9 = 9^2

40 - 13 = 27 = 9^3

1093 = 464 = 729 = 3^6

Answer 4

so add 3^n+1 to the previous term. n the the term number

Answer 5

What am I adding it to?

Answer 6

4, 4+3^2, (4 + 3^2)+3^3, .(4+3^2+3^3)+3^4 etc

Answer 7

OK. 121?

Answer 8

right

Answer 9

Thanks!