For r E N*, let a, be the number of integer solutions to the inequality x1 + 22 + x3 + x4

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.1: Infinite Sequences And Summation Notation
Problem 28E
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For r E N*, let a, be the number of integer solutions to the inequality
x1 + x2 + x3 + 24 < r,
where 3 < 21 < 9, 1< x2 < 10, 23 2 2 and r4 > 0. Find the generating
function for the sequence (ar) and the value of a20.
Transcribed Image Text:For r E N*, let a, be the number of integer solutions to the inequality x1 + x2 + x3 + 24 < r, where 3 < 21 < 9, 1< x2 < 10, 23 2 2 and r4 > 0. Find the generating function for the sequence (ar) and the value of a20.
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