what is the next term in this sequence?

Question

4, 7, 12, 20, 33, 54, 88, 143, 232, 376, _

please show ur work

Answer 1

 

Xn	X1	X2	X3	X4	X5	X6	X7	X8	X9
No. in sequence	4	7	12	20	33	54	88	143	232 etc.

 

 

And the equation of the sequence is:     Xn = X(n-1) + X(n-2) + 1

 

i.e.       X8 = X7 + X6 + 1 = 88 + 54 + 1 = 143