└── tribonacci.rb


/tribonacci.rb:
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1 | def fibonacci( n )
2 |   return  1  if ( 0..2 ).include? n
3 |   ( fibonacci( n - 1 ) + fibonacci( n - 2 ) + fibonacci( n - 3 ) )
4 | end
5 | 
6 | 15.times{ |i|
7 | 	puts fibonacci( i )
8 | }


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