A171449 Powers of 2 (A000079) with 1 changed to -1.

-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

Offset

0,2

Links

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

Crossrefs

Cf. A000079.

Sequence in context: A131577 A155559 A166444 * 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