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A049673 a(n)=(F(3n)+F(n))/3, where F=A000045 (the Fibonacci sequence). 0
0, 1, 3, 12, 49, 205, 864, 3653, 15463, 65484, 277365, 1174889, 4976832, 21082073, 89304891, 378301260, 1602509321, 6788337557, 28755857952, 121811766781, 516002920895, 2185823443596, 9259296684333, 39223010163217 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..23.

CROSSREFS

Sequence in context: A012772 A012864 A045890 * A052703 A151170 A151171

Adjacent sequences:  A049670 A049671 A049672 * A049674 A049675 A049676

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified November 28 01:41 EST 2014. Contains 250286 sequences.