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Template:Sequence of the Day for February 1

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Intended for: February 1, 2012

Timetable

  • First draft entered by Alonso del Arte on October 30, 2011 based on remarks by Carl R. White ✓
  • Draft to be reviewed by December 1, 2011
  • Draft to be approved by January 1, 2012

Yesterday's SOTD * Tomorrow's SOTD

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A174375:
n 2  −  XOR (n  2, n)
.
{ 0, 1, −2, −1, − 4, −3, 2, −5, −8, −7, ... }
Plotting the points of
a (n)
versus
n
up to a power of 2 approximates a Sierpiński gasket (look at A174375/graph).