id:A106622 - OEIS Search Results

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G.f.: (1-x^2+x^3)/(1-3*x^2+2*x^4).

+0
1

1, 0, 2, 1, 4, 3, 8, 7, 16, 15, 32, 31, 64, 63, 128, 127, 256, 255, 512, 511, 1024, 1023, 2048, 2047, 4096, 4095, 8192, 8191, 16384, 16383, 32768, 32767, 65536, 65535, 131072, 131071, 262144, 262143, 524288, 524287, 1048576, 1048575, 2097152, 2097151, 4194304, 4194303 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`2^floor(n/2) + [(-1)^n - 1]/2.`
	CROSSREFS	`Sequence in context: A100818 A005291 A106624 this_sequence A028297 A114438 A109195` `Adjacent sequences: A106619 A106620 A106621 this_sequence A106623 A106624 A106625`
	KEYWORD	`nonn`
	AUTHOR	`njas, May 15 2005`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

AT&T Labs Research