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A037524 Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 2,1,0. 1
2, 15, 105, 737, 5160, 36120, 252842, 1769895, 12389265, 86724857, 607074000, 4249518000, 29746626002, 208226382015, 1457584674105, 10203092718737, 71421649031160, 499951543218120, 3499660802526842 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Index entries for linear recurrences with constant coefficients, signature (7,0,1,-7).

FORMULA

G.f.: x*(x+2) / ((x-1)*(7*x-1)*(x^2+x+1)). [Colin Barker, Jan 12 2013]

MATHEMATICA

CoefficientList[Series[(x + 2)/((x - 1) (7 x - 1) (x^2 + x + 1)), {x, 0, 30}], x] (* Vincenzo Librandi, Oct 21 2013 *)

CROSSREFS

Sequence in context: A081018 A006675 A215643 * A037733 A037556 A037492

Adjacent sequences:  A037521 A037522 A037523 * A037525 A037526 A037527

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified July 21 12:41 EDT 2017. Contains 289642 sequences.