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A027929 T(n,2n-6), T given by A027926. 0
1, 2, 5, 13, 33, 79, 176, 365, 709, 1300, 2267, 3785, 6085, 9465, 14302, 21065, 30329, 42790, 59281, 80789, 108473, 143683, 187980, 243157, 311261, 394616, 495847, 617905, 764093, 938093, 1143994, 1386321, 1670065, 2000714 (list; graph; refs; listen; history; internal format)
OFFSET

3,2

FORMULA

a(n)=sum(binomial(n-k, 6-2k), k=0..3). - Len Smiley (smiley(AT)math.uaa.alaska.edu), Oct 20 2001

Empirical G.f.: x^3*(1-x+x^2)*(1-4*x+7*x^2-4*x^3+x^4)/(1-x)^7. [Colin Barker, Jan 16 2012]

CROSSREFS

Sequence in context: A199812 A110320 A108890 * A001659 A088921 A005183

Adjacent sequences:  A027926 A027927 A027928 * A027930 A027931 A027932

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 16 04:47 EST 2012. Contains 205860 sequences.