Given the sequence of isosceles right triangles P to A sub n to A sub n+1

with P to A sub n+1 = A sub n to A sub n+1 and with P to A sub 1 = 1

Find the smallest value of n such that A sub n to A sub n+1 < 0.001

one of responces i got was this on a different forum:

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To try to use formal algebraic symbolism, the process and symbolic form is tough to create; but if you have access to a BASIC language then you might find your answer through this, extremely unrefined program:

dim S(50)

i=0

input "Initial Length Hypotenuse? ";So

LET S(1)=1

LET i=1

FOR i=1 to 40

'i=i+1

S(i) = So/(sqr(2))

So=S(i)

print i;" loopwhiletest ";S(i)

i=i+1

NEXT i

END

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im only a sophmore in pre calc. i have no idea wat the above responce wanted me to do...???