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A033133 Base-6 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0. 1
1, 7, 42, 253, 1519, 9114, 54685, 328111, 1968666, 11811997, 70871983, 425231898, 2551391389, 15308348335, 91850090010, 551100540061, 3306603240367, 19839619442202, 119037716653213, 714226299919279, 4285357799515674, 25712146797094045, 154272880782564271 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Colin Barker, Table of n, a(n) for n = 1..1000

Index entries for linear recurrences with constant coefficients, signature (6,0,1,-6).

FORMULA

a(n) = 6*a(n-1) + a(n-3) - 6*a(n-4).

G.f.: x*(1+x) / ((1-x)*(1-6*x)*(1+x+x^2)). - Colin Barker, Dec 24 2015

PROG

(PARI) Vec(x*(1+x)/((1-x)*(1-6*x)*(1+x+x^2)) + O(x^30)) \\ Colin Barker, Dec 24 2015

CROSSREFS

Sequence in context: A170688 A003949 A252700 * A082035 A127016 A152239

Adjacent sequences:  A033130 A033131 A033132 * A033134 A033135 A033136

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified November 21 14:18 EST 2019. Contains 329371 sequences. (Running on oeis4.)