Problem: A006520

Code: A006520/tails_1644934146

Nibbles version: 0.2 | 0.21 | 0.22 | 0.23 | 0.24 | 0.25 | 1.00

Format: Compact | Simple | +Type | Table | JSON | .nbl (DeBruijn) | .nbl (names)

=\ (scanl1) 
    , (range from 1) 
        500 (integer) 
    + (add) <--arg( B A ) 
        @ (= A) 
        `& (bit intersection) 
            $ (= B) 
            * (multiply) 
                ~ (auto = -1) 
                (implicit arg = B)