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A178419 Partial sums of A006431. 0
0, 1, 3, 6, 11, 17, 24, 32, 43, 57, 72, 95, 119, 151, 207, 303, 431, 655, 1039, 1551, 2447, 3983, 6031, 9615, 15759, 23951, 38287, 62863, 95631, 152975, 251279, 382351, 611727, 1004943, 1529231, 2446735, 4019599, 6116751, 9786767, 16078223 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..40.

Index entries for linear recurrences with constant coefficients, signature (1,0,4,-4).

FORMULA

a(n) = Sum_{i=1..n} A006431(i).

G.f.: -x^2*(36*x^13 +28*x^12 +32*x^11 +21*x^10 +17*x^9 +14*x^8 +13*x^7 +12*x^6 +5*x^5 +2*x^4 -x^3 -3*x^2 -2*x -1) / ((x -1)*(4*x^3 -1)). - Colin Barker, Apr 20 2013

CROSSREFS

Cf. A006431.

Sequence in context: A332410 A194142 A174648 * A065504 A071619 A025735

Adjacent sequences:  A178416 A178417 A178418 * A178420 A178421 A178422

KEYWORD

nonn,easy

AUTHOR

Jonathan Vos Post, May 27 2010

STATUS

approved

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Last modified November 29 23:37 EST 2020. Contains 338780 sequences. (Running on oeis4.)