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A130129 (3*n+1)*2^n. 3
1, 8, 28, 80, 208, 512, 1216, 2816, 6400, 14336, 31744, 69632, 151552, 327680, 704512, 1507328, 3211264, 6815744, 14417920, 30408704, 63963136, 134217728, 281018368, 587202560, 1224736768, 2550136832, 5301600256, 11005853696, 22817013760 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..300

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

FORMULA

a(n+1) - a(n) = A066373(n+3). - J. M. Bergot, Apr 21 2013

G.f. ( 1+4*x ) / (2*x-1)^2 . - R. J. Mathar, Apr 25 2013

PROG

(MAGMA) [(3*n+1)*2^n: n in [0..30]]; // Vincenzo Librandi, May 04 2011

CROSSREFS

Cf. A016921 (inverse binomial transform)

Sequence in context: A134638 A293289 A305638 * A317032 A229713 A212516

Adjacent sequences:  A130126 A130127 A130128 * A130130 A130131 A130132

KEYWORD

nonn,easy

AUTHOR

Paul Curtz, Aug 01 2007

STATUS

approved

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Last modified March 22 12:46 EDT 2019. Contains 321421 sequences. (Running on oeis4.)