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A037730 Base 4 digits are, in order, the first n terms of the periodic sequence with initial period 2,1,0,3. 0
2, 9, 36, 147, 590, 2361, 9444, 37779, 151118, 604473, 2417892, 9671571, 38686286, 154745145, 618980580, 2475922323, 9903689294, 39614757177, 158459028708, 633836114835, 2535344459342, 10141377837369, 40565511349476 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..23.

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

FORMULA

G.f.: ( x*(2+x+3*x^3) ) / ( (x-1)*(4*x-1)*(1+x)*(1+x^2) ). - R. J. Mathar, Oct 14 2015

CROSSREFS

Sequence in context: A003125 A055841 A037521 * A029874 A052834 A289805

Adjacent sequences:  A037727 A037728 A037729 * A037731 A037732 A037733

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified March 21 12:09 EDT 2019. Contains 321369 sequences. (Running on oeis4.)