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A135446
a(n)=3a(n-1)-3a(n-2)+2a(n-3).
+0
1
-1, -1, 3, 10, 19, 33, 62, 125, 255, 514, 1027, 2049, 4094, 8189, 16383, 32770, 65539, 131073, 262142, 524285, 1048575, 2097154, 4194307, 8388609, 16777214, 33554429, 67108863, 134217730, 268435459, 536870913, 1073741822
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.
AT&T Labs Research
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