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  1. <?php
  2. 	function f($n){return--$n?f($n)**2-f($n)+1:2;}
  3. 	echo f(1), PHP_EOL;
  4. 	echo f(2), PHP_EOL;
  5. 	echo f(3), PHP_EOL;
  6. 	echo f(4), PHP_EOL;
  7. 	echo f(5), PHP_EOL;
  8. 	echo f(4), PHP_EOL;
  9. 	echo f(3), PHP_EOL;
  10. 	echo f(2), PHP_EOL;
  11. 	echo f(1), PHP_EOL;
  12. ?>
Success #stdin #stdout 0.02s 52488KB
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https://ideone.com/t2pXZB
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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