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A064758 a(n) = n*12^n - 1. 2
11, 287, 5183, 82943, 1244159, 17915903, 250822655, 3439853567, 46438023167, 619173642239, 8173092077567, 106993205379071, 1390911669927935, 17974858503684095, 231105323618795519, 2958148142320582655, 37716388814587428863, 479219999055934390271, 6070119988041835610111, 76675199848949502443519 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harry J. Smith, Table of n, a(n) for n = 1..150

Paul Leyland, Factors of Cullen and Woodall numbers

Paul Leyland, Generalized Cullen and Woodall numbers

Index entries for linear recurrences with constant coefficients, signature (25,-168,144).

FORMULA

G.f.: x*(11 + 12*x - 144*x^2) / ((1 - 12*x)^2*(1 - x)). - Vincenzo Librandi, Jun 21 2018

MATHEMATICA

CoefficientList[Series[(11 + 12 x - 144 x^2) / ((1 - 12 x)^2 (1 - x)), {x, 0, 33}], x] (* Vincenzo Librandi, Jun 21 2018 *)

PROG

(PARI) { for (n=1, 150, write("b064758.txt", n, " ", n*12^n - 1) ) } \\ Harry J. Smith, Sep 24 2009

(MAGMA) [n*12^n - 1: n in [1..30]]; // Vincenzo Librandi, Jun 21 2018

CROSSREFS

Cf. A064750.

Sequence in context: A280359 A196790 A166182 * A030428 A219099 A133515

Adjacent sequences:  A064755 A064756 A064757 * A064759 A064760 A064761

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Oct 19 2001

STATUS

approved

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Last modified October 22 14:44 EDT 2019. Contains 328318 sequences. (Running on oeis4.)