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A171449 Powers of 2 (A000079) with 1 changed to -1. 6
-1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, 262144, 524288, 1048576, 2097152, 4194304, 8388608, 16777216, 33554432, 67108864, 134217728, 268435456, 536870912, 1073741824, 2147483648, 4294967296, 8589934592 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..33.

CROSSREFS

Sequence in context: A120617 A131577 A155559 * A122803 A274867 A274866

Adjacent sequences:  A171446 A171447 A171448 * A171450 A171451 A171452

KEYWORD

sign

AUTHOR

Paul Curtz, Dec 09 2009

EXTENSIONS

Edited by N. J. A. Sloane, Dec 17 2009

STATUS

approved

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Last modified June 25 22:15 EDT 2017. Contains 288730 sequences.