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<?php function fib($n) { return ((4 << $n*(3+$n)) / ((4 << 2*$n) - (2 << $n) - 1) & ((2 << $n) - 1)); } for ($i = 50; $i < 60; $i++) { echo "Fib {$i}: " . fib($i) . "\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
Fib 50: 0 Fib 51: 0 Fib 52: 0 Fib 53: 0 Fib 54: 0 Fib 55: 0 Fib 56: 0 Fib 57: 0 Fib 58: 0 Fib 59: 0

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