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A026385 Sum{T(n-k,k)}, 0<=k<=[ n/2 ], where T is the array in A026374. 1
1, 1, 2, 4, 6, 11, 20, 33, 59, 104, 178, 314, 549, 952, 1669, 2913, 5074, 8872, 15482, 27007, 47172, 82325, 143675, 250848, 437822, 764198, 1334041, 2328512, 4064457, 7094833, 12384034, 21616716, 37732990, 65863651 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..33.

FORMULA

G.f.: [1+x+x^2]/[1-x^2-3x^3-x^4]. - R. Stephan, Apr 30 2004

CROSSREFS

Sequence in context: A113913 A002097 A026757 * A199926 A068330 A017993

Adjacent sequences:  A026382 A026383 A026384 * A026386 A026387 A026388

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 22 23:20 EDT 2013. Contains 225585 sequences.