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A114375 a(n) = (a(n-1) XOR a(n-2)) + 1. 0
0, 1, 2, 4, 7, 4, 4, 1, 6, 8, 15, 8, 8, 1, 10, 12, 7, 12, 12, 1, 14, 16, 31, 16, 16, 1, 18, 20, 7, 20, 20, 1, 22, 24, 15, 24, 24, 1, 26, 28, 7, 28, 28, 1, 30, 32, 63, 32, 32, 1, 34, 36, 7, 36, 36, 1, 38, 40, 15, 40, 40, 1, 42, 44, 7, 44, 44, 1, 46, 48, 31, 48, 48, 1, 50, 52, 7, 52, 52, 1 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

FORMULA

a(3n)=4*floor((n+1)/2). a(3n+2)=2n+2. a(6n+1)=1. a(6n+4)=2^(A001511(n+1)+2)-1.

CROSSREFS

Cf. A003987, A001511.

Sequence in context: A063733 A187089 A141330 * A198503 A129200 A074958

Adjacent sequences:  A114372 A114373 A114374 * A114376 A114377 A114378

KEYWORD

nonn

AUTHOR

Frank Adams-Watters (FrankTAW(AT)Netscape.net), Feb 09 2006

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Last modified February 17 08:21 EST 2012. Contains 205998 sequences.