7 lines
181 B
Raku
7 lines
181 B
Raku
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my @P = 1, { p(++$) } … *;
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my @i = lazy [\+] flat 1, ( 1..* Z (1..*).map: * × 2 + 1 );
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sub p ($n) { sum @P[$n X- @i] Z× (flat (1, 1, -1, -1) xx *) }
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put @P[^26];
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put @P[6666];
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