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A320283
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Lexicographical ordering of pure imaginary integers in the base (-1+i) numeral system.
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2
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0, 1, -2, -1, -4, -3, -6, -5, 8, 9, 6, 7, 4, 5, 2, 3, 16, 17, 14, 15, 12, 13, 10, 11, 24, 25, 22, 23, 20, 21, 18, 19, -32, -31, -34, -33, -36, -35, -38, -37, -24, -23, -26, -25, -28, -27, -30, -29, -16, -15, -18, -17, -20, -19, -22, -21, -8, -7, -10, -9, -12, -11, -14, -13, -64, -63, -66, -65, -68, -67, -70, -69
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OFFSET
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0,3
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COMMENTS
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For ordering of pure real integers in same system see A073791.
All integers appear in this sequence.
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LINKS
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FORMULA
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a(n) = -a(4*n)/4.
a(n) = -4*a(floor(n/4)) + a(n mod 4). (End)
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CROSSREFS
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KEYWORD
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sign,easy
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AUTHOR
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STATUS
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approved
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