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A027164 a(n) = T(n,0) + T(n,1) + ... + T(n,n), T given by A027157. 0
1, 3, 10, 22, 67, 145, 436, 940, 2821, 6079, 18238, 39298, 117895, 254029, 762088, 1642072, 4926217, 10614523, 31843570, 68613358, 205840075, 443523721, 1330571164, 2866982404, 8600947213, 18532465591, 55597396774 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

G.f.: x(x^2+2x+1)/[(1-x)(1-6x^2-3x^4)].

MATHEMATICA

CoefficientList[Series[(1+2x+x^2)/(1-x-6x^2+6x^3-3x^4 + 3x^5), {x, 0, 30}], x]  (* From Harvey P. Dale, Mar 20 2011 *)

CROSSREFS

Sequence in context: A023554 A070880 A171686 * A166119 A041403 A077126

Adjacent sequences:  A027161 A027162 A027163 * A027165 A027166 A027167

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 17 06:13 EST 2012. Contains 205991 sequences.