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A199312 (9*5^n+1)/2. 1
5, 23, 113, 563, 2813, 14063, 70313, 351563, 1757813, 8789063, 43945313, 219726563, 1098632813, 5493164063, 27465820313, 137329101563, 686645507813, 3433227539063, 17166137695313, 85830688476563, 429153442382813, 2145767211914063 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Index to sequences with linear recurrences with constant coefficients, signature (6,-5).

FORMULA

a(n) = 5*a(n-1)-2.

a(n) = 6*a(n-1)-5*a(n-2).

G.f.: (5-7*x)/((1-x)*(1-5*x)).

PROG

(MAGMA) [(9*5^n+1)/2: n in [0..30]];

CROSSREFS

Sequence in context: A017975 A186652 A178873 * A113284 A104090 A073596

Adjacent sequences:  A199309 A199310 A199311 * A199313 A199314 A199315

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Nov 05 2011

STATUS

approved

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Last modified May 26 02:46 EDT 2013. Contains 225653 sequences.