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A189740 Partial sums of tetranacci numbers (A000288). 0
1, 2, 3, 4, 8, 15, 28, 53, 102, 196, 377, 726, 1399, 2696, 5196, 10015, 19304, 37209, 71722, 138248, 266481, 513658, 990107, 1908492, 3678736, 7090991, 13668324, 26346541, 50784590, 97890444, 188689897, 363711470, 701076399, 1351368208, 2604845972 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..35.

Index entries for linear recurrences with constant coefficients, signature (2, 0, 0, 0, -1).

FORMULA

a(1)=1, a(2)=2, a(3)=3, a(4)=4, a(5)=8, a(n)=2*a(n-1)-a(n-5). - Harvey P. Dale, May 23 2011

G.f.: -x*(2*x^3+x^2-1) / ((x-1)*(x^4+x^3+x^2+x-1)). - Colin Barker, Aug 07 2013

MATHEMATICA

Accumulate[LinearRecurrence[{1, 1, 1, 1}, {1, 1, 1, 1}, 50]] (* or *) LinearRecurrence[ {2, 0, 0, 0, -1}, {1, 2, 3, 4, 8}, 50] (* Harvey P. Dale, May 23 2011 *)

CROSSREFS

Cf. A000288.

Sequence in context: A097029 A122774 A274166 * A118841 A126294 A224912

Adjacent sequences:  A189737 A189738 A189739 * A189741 A189742 A189743

KEYWORD

nonn,easy

AUTHOR

Harvey P. Dale, May 23 2011

STATUS

approved

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Last modified April 7 04:20 EDT 2020. Contains 333292 sequences. (Running on oeis4.)