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A086866 Third column of A059450. 2
0, 0, 5, 17, 50, 136, 352, 880, 2144, 5120, 12032, 27904, 64000, 145408, 327680, 733184, 1630208, 3604480, 7929856, 17367040, 37879808, 82313216, 178257920, 384827392, 828375040, 1778384896, 3808428032, 8136949760, 17347641344 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

REFERENCES

C. Coker, Enumerating a class of lattice paths, Discrete Math., 271 (2003), 13-28.

LINKS

Harvey P. Dale, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (6,-12,8).

FORMULA

For n>1, a(n) = (n^2+9n-2)*2^(n-4). - Ralf Stephan, May 10 2004

MATHEMATICA

LinearRecurrence[{6, -12, 8}, {0, 0, 5, 17, 50}, 30] (* Harvey P. Dale, Jun 13 2016 *)

CROSSREFS

Sequence in context: A147260 A273688 A146045 * A054452 A196310 A196283

Adjacent sequences:  A086863 A086864 A086865 * A086867 A086868 A086869

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Sep 16 2003

EXTENSIONS

More terms from Ray Chandler, Sep 17 2003

STATUS

approved

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Last modified September 18 01:39 EDT 2021. Contains 347504 sequences. (Running on oeis4.)