A138382 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A138382

First differences of A138380. Second differences of A138377.

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

Table of n, a(n) for n=0..41.

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