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A087439 Expansion of (1-4x)/((1-x)(1-3x)(1-5x)). 1
1, 5, 22, 98, 451, 2135, 10312, 50468, 249061, 1235465, 6147802, 30650438, 152986471, 764135195, 3818284492, 19084248008, 95399716681, 476934013325, 2384476356382, 11921800651178, 59607259863691, 298031069141855 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Partial sums of A081186. The sequence 0,1,5,22,.. is given by 5^n/8+3^n/4-3/8. Binomial transform of A087440.

LINKS

Table of n, a(n) for n=0..21.

Index entries for linear recurrences with constant coefficients, signature (9,-23,15).

FORMULA

a(n)=5*5^n/8+3*3^n/4-3/8.

CROSSREFS

Sequence in context: A129158 A129164 A123347 * A033452 A295519 A179602

Adjacent sequences:  A087436 A087437 A087438 * A087440 A087441 A087442

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Sep 03 2003

STATUS

approved

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Last modified February 23 11:21 EST 2020. Contains 332159 sequences. (Running on oeis4.)