SOLUTION: find the first five terms of a1=3, aN=aN-1+2(n-2), n>or=2

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Question 332881: find the first five terms of a1=3, aN=aN-1+2(n-2), n>or=2
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
find the first five terms of
a%5B1%5D=3,
a%5BN%5D%22%22=%22%22a%5BN-1%5D-%22%22%22%22%2B%22%222%28n-2%29, n%3E=2

Substitute N=2 and a%5B1%5D=3: 

a%5B2%5D%22%22=%22%22a%5B2-1%5D-%22%22%22%22%2B%22%222%282-2%29
a%5B2%5D%22%22=%22%22a%5B1%5D%22%22%2B%22%222%280%29
a%5B2%5D%22%22=%22%223%22%22%2B%22%220
a%5B2%5D%22%22=%22%223

Substitute N=3 and a%5B2%5D=3: 

a%5B3%5D%22%22=%22%22a%5B3-1%5D-%22%22%22%22%2B%22%222%283-2%29
a%5B3%5D%22%22=%22%22a%5B2%5D%22%22%2B%22%222%281%29
a%5B3%5D%22%22=%22%223%22%22%2B%22%222
a%5B3%5D%22%22=%22%225

Substitute N=4 and a%5B3%5D=5: 

a%5B4%5D%22%22=%22%22a%5B4-1%5D-%22%22%22%22%2B%22%222%284-2%29
a%5B4%5D%22%22=%22%22a%5B3%5D%22%22%2B%22%222%282%29
a%5B4%5D%22%22=%22%225%22%22%2B%22%224
a%5B4%5D%22%22=%22%229

Substitute N=5 and a%5B4%5D=9: 

a%5B5%5D%22%22=%22%22a%5B5-1%5D-%22%22%22%22%2B%22%222%285-2%29
a%5B5%5D%22%22=%22%22a%5B4%5D%22%22%2B%22%222%283%29
a%5B5%5D%22%22=%22%229%22%22%2B%22%226
a%5B5%5D%22%22=%22%2215

Edwin