-! Copyright (C) 2018 John Benediktsson
+! Copyright (C) 2018 John Benediktsson.
! See https://factorcode.org/license.txt for BSD license
-
USING: backtrack backtrack.private combinators.short-circuit
kernel math math.functions math.primes
project-euler.common sequences ;
-
IN: project-euler.060
! https://projecteuler.net/problem=60