00:01
Okay, here in this case, the sequence is defined as the first term is equals to 1.
00:06
The second term is equals to 1.
00:08
And the n -at term is defined as a -n plus 1 plus a -n -minus 2.
00:16
Sorry, this is a -n -minus 1.
00:17
Let me just correct.
00:18
This is a -n -minus 1 and a -n -2, right? so this is valid for all values of n greater than equals to 3.
00:29
All right the sequence is also called fibonarchy sequence so which means n should be equals to three when n is equal to three we have a three is equal to this is a two right a two plus a one a two plus a one is two right because one plus one is two similarly when we put n is equals to four when we put n is equals to four a four this becomes a four a four a four is equal a three a three a three is two eight two is one so this simply comes out to be 3.
00:54
When n is equal to 5, this is a 5.
00:56
A5 is equal to a4 plus a3.
00:59
Now a4 value is 3 and a3 value is 2...