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A113437 Second row of A113435. 0
1, 3, 11, 41, 154, 581, 2197, 8317, 31501, 119338, 452141, 1713111, 6490879, 24593701, 93184802, 353074657, 1337790401, 5068852073, 19205744921, 72770053106, 275723780329, 1044710007771, 3958378188707, 14998188734897 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

a(n) = 7a(n-1)-5a(n-2)+11a(n-3)-a(n-4)

g.f.: (1-4*x+5*x^2-2*x^3)/(1-7*x+15*x^2-11*x^3+x^4)

CROSSREFS

Cf. a(n)=A113435(3n+1).

Sequence in context: A032952 A001835 A079935 * A076540 A196472 A176085

Adjacent sequences:  A113434 A113435 A113436 * A113438 A113439 A113440

KEYWORD

nonn

AUTHOR

Floor van Lamoen (fvlamoen(AT)hotmail.com), Nov 04 2005

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Last modified February 15 13:26 EST 2012. Contains 205802 sequences.