Template:Sequence of the Day for February 1

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).