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A102516 Sum C(n-3k,3k+1), k=0..floor(n/6). 1
0, 1, 2, 3, 4, 5, 6, 8, 13, 24, 45, 81, 138, 224, 352, 546, 851, 1348, 2175, 3556, 5843, 9582, 15624, 25317, 40836, 65737, 105863, 170796, 276160, 447272, 724968, 1174985, 1903186, 3080367, 4982688, 8057421, 13029534, 21074012, 34094041 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..38.

Index entries for linear recurrences with constant coefficients, signature (3,-3,1,0,0,1).

FORMULA

G.f.: x(1-x)/((1-x)^3-x^6); a(n)=sum{k=0..floor(n/6), C(n-3k, 3k+1)}.

CROSSREFS

Cf. A101551.

Sequence in context: A133430 A033071 A049432 * A156981 A271949 A039089

Adjacent sequences:  A102513 A102514 A102515 * A102517 A102518 A102519

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Jan 13 2005

STATUS

approved

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Last modified February 21 02:05 EST 2018. Contains 299388 sequences. (Running on oeis4.)