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 A138382 First differences of A138380. Second differences of A138377. 1
 1, -3, -1, -2, -4, 12, 4, 8, 16, -48, -16, -32, -64, 192, 64, 128, 256, -768, -256, -512, -1024, 3072, 1024, 2048, 4096, -12288, -4096, -8192, -16384, 49152, 16384, 32768, 65536, -196608, -65536, -131072, -262144, 786432, 262144, 524288, 1048576, -3145728 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, -4). FORMULA a(n)=-4a(n-4). MATHEMATICA Differences[LinearRecurrence[{0, 0, 0, -4}, {0, 1, 3, 2}, 60], 2] (* Harvey P. Dale, Mar 19 2012 *) LinearRecurrence[{0, 0, 0, -4}, {1, -3, -1, -2}, 42] (* Ray Chandler, Aug 03 2015 *) CROSSREFS Sequence in context: A083275 A230892 A325671 * A123375 A021036 A211025 Adjacent sequences:  A138379 A138380 A138381 * A138383 A138384 A138385 KEYWORD sign AUTHOR Paul Curtz, May 08 2008 EXTENSIONS Definition corrected by R. J. Mathar, May 09 2008 More terms from Harvey P. Dale, Mar 19 2012 STATUS approved

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Last modified April 14 15:18 EDT 2021. Contains 342949 sequences. (Running on oeis4.)